{"id":43998,"date":"2024-03-13T14:08:27","date_gmt":"2024-03-13T19:08:27","guid":{"rendered":"https:\/\/www.rvsperformance.com\/live\/shop\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\/"},"modified":"2025-04-07T16:47:47","modified_gmt":"2025-04-07T21:47:47","slug":"d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated","status":"publish","type":"product","link":"https:\/\/www.rvsperformance.com\/live\/shop\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\/","title":{"rendered":"D-Class 4 CH Amplifier 75 WRMS x 4 at 2&Omega; (IP64 rated)"},"content":{"rendered":"<h2>Ch: 4 &#8211; 2 | 600 W<\/h2>\r\n\r\n<p>Thanks to the ultra-compact cast-aluminium chassis (IP64 rated), the <strong>HMP 4D<\/strong> amplifier is nature-proof, being the ideal choice for UTV\/ATV\/motorcycle installations. It features an incredible power\/size ratio and an easy setup thanks to the integrated crossover filter. The Front End section features a complete and bypassable crossover system, providing full system design flexibility with or without external processors, offering the user endless connection possibilities with any source. Inputs feature a special balanced circuitry, ensuring high rejection against electro-magnetic interferences, for noise-free results.\r\n<\/p>\r\n\r\n<div class=\"product-layout-informations hd_product_features_tabs col-12\">\r\n                                                <ul class=\"nav nav-tabs\" id=\"product-tab\" role=\"tablist\">\r\n                                                            <li class=\"nav-item\" role=\"tab\">\r\n                                    <button itemprop=\"title\" class=\"nav-link active\" id=\"product-control-specs\" data-bs-toggle=\"tab\" data-bs-target=\"#product-specs\" type=\"button\" role=\"tab\" aria-controls=\"product-specs\" aria-selected=\"true\">\r\n                                        Specs                                    <\/button>\r\n                                <\/li>\r\n                                                                    <li class=\"nav-item\" role=\"tab\">\r\n                                        <button itemprop=\"title\" class=\"nav-link \" id=\"product-control-accessories\" data-bs-toggle=\"tab\" data-bs-target=\"#product-accessories\" type=\"button\" role=\"tab\" aria-controls=\"product-accessories\" aria-selected=\"true\">\r\n                                            Accessories                                        <\/button>\r\n                                    <\/li>\r\n                                                                        <li class=\"nav-item\" role=\"tab\">\r\n                                        <button itemprop=\"title\" class=\"nav-link \" id=\"product-control-input-output\" data-bs-toggle=\"tab\" data-bs-target=\"#product-input-output\" type=\"button\" role=\"tab\" aria-controls=\"product-input-output\" aria-selected=\"true\">\r\n                                            Input\/Output                                        <\/button>\r\n                                    <\/li>\r\n                                                                        <li class=\"nav-item\" role=\"tab\">\r\n                                        <button itemprop=\"title\" class=\"nav-link \" id=\"product-control-technologies\" data-bs-toggle=\"tab\" data-bs-target=\"#product-technologies\" type=\"button\" role=\"tab\" aria-controls=\"product-technologies\" aria-selected=\"true\">\r\n                                            Technologies                                        <\/button>\r\n                                    <\/li>\r\n                                                                        <li class=\"nav-item\" role=\"tab\">\r\n                                        <button itemprop=\"title\" class=\"nav-link \" id=\"product-control-downloads\" data-bs-toggle=\"tab\" data-bs-target=\"#product-downloads\" type=\"button\" role=\"tab\" aria-controls=\"product-downloads\" aria-selected=\"true\">\r\n                                            Downloads                                        <\/button>\r\n                                    <\/li>\r\n                                                            <\/ul>\r\n                        <div class=\"tab-content\" id=\"product-tab-content\">\r\n                                                            <div class=\"tab-pane fade show active\" id=\"product-specs\" role=\"tabpanel\" aria-labelledby=\"product-control-specs\" itemprop=\"content\">\r\n                                    <div class=\"row\">\r\n                                                                                            <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                        <div class=\"sc--separator-elements\">\r\n                                                            <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                                General Specs                                                            <\/div>\r\n                                                                    <div class=\"table-responsive-sm\" itemprop=\"content\">\r\n            <table class=\"table caption-top\">\r\n                                    <tbody>\r\n                                                    <tr>\r\n                                    <td><strong>Channels<\/strong> <\/td>\r\n                                    <td>4 &#8211; 2<\/td>\r\n                                <\/tr>\r\n                                                                            <tr>\r\n                                                            <td>POWER SUPPLY<\/td>\r\n                                                                <td><\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Power supply voltage \/ fuse:<\/strong><\/td>\r\n                                                                <td>11 \u00f7 15 VDC \/ 1 x 15 A<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Idling current (power ON\/OFF)<\/strong><\/td>\r\n                                                                <td>1.2 A \/ 0.04 mA<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Consumption @ 2 ?, 14.4 VDC\r\n(Max Musical Power): <\/strong><\/td>\r\n                                                                <td>15 A<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Remote In: <\/strong><\/td>\r\n                                                                <td>4 \u00f7 15 VDC &#8211; 1 mA<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>ART:<\/strong><\/td>\r\n                                                                <td>Automatic Remote Turn-On\/Off<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>AMPLIFIER STAGE<\/td>\r\n                                                                <td><\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Distorsion &#8211; THD (100 Hz @ 4?)<\/strong><\/td>\r\n                                                                <td>0.2 %<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Bandwidth:<\/strong><\/td>\r\n                                                                <td>10 \u00f7 30K Hz<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>S\/N Ratio (A weighted @ 1 V):<\/strong><\/td>\r\n                                                                <td>95 dB<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Damping factor (100 Hz @ 4?)<\/strong><\/td>\r\n                                                                <td>45<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Pre-In sensitivity:<\/strong><\/td>\r\n                                                                <td>LO: 0.2 \u00f7 5 V <br>\r\nHI: 0.8 \u00f7 20 V<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Load impedance (MIN)<\/strong><br>\r\n@ 4 Ch:<br>\r\n@ 2 Ch:<\/td>\r\n                                                                <td><br>\r\n2?<br>\r\n4?<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Max size (mm\/in):<\/strong><\/td>\r\n                                                                <td>223 x 100,5 x 43,6 \/ 8.77 x 3.95 x 1.71<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>Weight (kg\/lb):\r\n<\/strong><\/td>\r\n                                                                <td>1.35 \/ 2.97<\/td>\r\n                                                        <\/tr>\r\n                                                                            <tr>\r\n                                    <td><strong>Adjustable Crossovers<\/strong> <\/td>\r\n                                    <td>yes<\/td>\r\n                                <\/tr>\r\n                                                    <\/tbody>\r\n                                <\/table>\r\n        <\/div>\r\n                                                                <\/div>\r\n                                                    <\/div>\r\n                                                                                                <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                    <div class=\"sc--separator-elements\">\r\n                                                        <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                            Output Power                                                        <\/div>\r\n                                                                <div class=\"table-responsive-sm\" itemprop=\"content\">\r\n            <table class=\"table caption-top\">\r\n                                    <tbody>\r\n                                                                <tr>\r\n                                                            <td>OUTPUT POWER (RMS) @ 14.4 VDC, THD 1%:<\/td>\r\n                                                                <td><\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>4 Ch\r\n<\/strong><\/td>\r\n                                                                <td>50 W x 4 (4 ?)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>4 Ch\r\n<\/strong><\/td>\r\n                                                                <td>65 W x 4 (2 ?)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>3 Ch\r\n<\/strong><\/td>\r\n                                                                <td>50 W x 2 (4 O) + 130 W x 1 (4 O)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>3 Ch\r\n<\/strong><\/td>\r\n                                                                <td>65 W x 2 (2 O) + 130 W x 1 (4 O)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>2 Ch\r\n<\/strong><\/td>\r\n                                                                <td>130 W x 2 (4 ?)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>OUTPUT POWER (RMS) @ 14.4 VDC, THD 10%:<\/td>\r\n                                                                <td><\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>4 Ch\r\n<\/strong><\/td>\r\n                                                                <td>60 W x 4 (4 ?)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>4 Ch\r\n<\/strong><\/td>\r\n                                                                <td>75 W x 4 (2 ?)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>3 Ch\r\n<\/strong><\/td>\r\n                                                                <td>60 W x 2 (4 O) + 150 W x 1 (4 O)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>3 Ch\r\n<\/strong><\/td>\r\n                                                                <td>75 W x 2 (2 O) + 150 W x 1 (4 O)<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>2 Ch\r\n<\/strong><\/td>\r\n                                                                <td>150 W x 2 (4 ?)<\/td>\r\n                                                        <\/tr>\r\n                                                                            <tr>\r\n                                    <td><strong>Total Power<\/strong> <\/td>\r\n                                    <td>600 W<\/td>\r\n                                <\/tr>\r\n                                                    <\/tbody>\r\n                                <\/table>\r\n        <\/div>\r\n                                                            <\/div>\r\n                                                <\/div>\r\n                                                                                                <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                    <div class=\"sc--separator-elements\">\r\n                                                        <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                            INPUTS \/ FILTERS                                                        <\/div>\r\n                                                                <div class=\"table-responsive-sm\" itemprop=\"content\">\r\n            <table class=\"table caption-top\">\r\n                                    <tbody>\r\n                                                                <tr>\r\n                                                            <td><strong>Inputs:<\/strong><\/td>\r\n                                                                <td>PRE IN<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>FRONT Ch. filters FULL:<\/strong><\/td>\r\n                                                                <td>Yes<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>Lo-Pass:<\/td>\r\n                                                                <td>65-85-115 Hz @ 12 dB\/Oct<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td><strong>REAR Ch. filters FULL<\/strong><\/td>\r\n                                                                <td>Yes<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>Hi-Pass:<\/td>\r\n                                                                <td>65-85-115 Hz @ 12 dB\/Oct<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>Lo-Pass:<\/td>\r\n                                                                <td>65-85-115 Hz @ 12 dB\/Oct.<\/td>\r\n                                                        <\/tr>\r\n                                                                <\/tbody>\r\n                                <\/table>\r\n        <\/div>\r\n                                                            <\/div>\r\n                                                <\/div>\r\n                                                                                                <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                    <div class=\"sc--separator-elements\">\r\n                                                        <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                            Physical Specs                                                        <\/div>\r\n                                                                                                                    <a class=\"float-start mb-3\" data-fancybox=\"product-physical-specs\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/HMP_4D.png\">\r\n                                                                <img loading=\"lazy\" width=\"323\" height=\"722\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/HMP_4D.png\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\" srcset=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/HMP_4D.png 323w, https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/HMP_4D-134x300.png 134w\" sizes=\"auto, (max-width: 323px) 100vw, 323px\">                                                            <\/a>\r\n                                                                    <div class=\"table-responsive-sm\" itemprop=\"content\">\r\n            <table class=\"table caption-top\">\r\n                                    <tbody>\r\n                                                                <tr>\r\n                                                            <td><\/td>\r\n                                                                <td>mm<\/td>\r\n                                                                <td>in<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>A<\/td>\r\n                                                                <td>223<\/td>\r\n                                                                <td>8.78<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>B<\/td>\r\n                                                                <td>207<\/td>\r\n                                                                <td>8.15<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>C<\/td>\r\n                                                                <td>100,5<\/td>\r\n                                                                <td>3.96<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>D<\/td>\r\n                                                                <td>76<\/td>\r\n                                                                <td>2.99<\/td>\r\n                                                        <\/tr>\r\n                                                <tr>\r\n                                                            <td>E<\/td>\r\n                                                                <td>43,6<\/td>\r\n                                                                <td>1.72<\/td>\r\n                                                        <\/tr>\r\n                                                                <\/tbody>\r\n                                <\/table>\r\n        <\/div>\r\n                                                            <\/div>\r\n                                                <\/div>\r\n<\/div>\r\n                                <\/div>\r\n                                                                        <div class=\"tab-pane fade \" id=\"product-accessories\" role=\"tabpanel\" aria-labelledby=\"product-control-accessories\" itemprop=\"content\">\r\n                                            <div class=\"row\">\r\n                                                <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                    Accessories                                                <\/div>\r\n                                                                                                            <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                                <div class=\"sc--separator-elements\">\r\n                                                                    <div class=\"row\">\r\n                                                                                                                                                            <a class=\"col-md-6 col-sm-12 mb-3\" data-fancybox=\"product-accessories-0\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_HDP_CABLES1.jpg\">\r\n                                                                                        <img loading=\"lazy\" width=\"190\" height=\"171\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_HDP_CABLES1.jpg\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\">                                                                                    <\/a>\r\n                                                                                                                                                        <div class=\"col-md-6 col-sm-12\">\r\n                                                                                                                                                                <div class=\"product-tab-title-sub\" itemprop=\"title\">\r\n                                                                                        Nature-proof connection cable                                                                                    <\/div>\r\n                                                                                                                                                                        <div class=\"custom-color-g1 mb-2\" itemprop=\"title\">\r\n                                                                                        Provided                                                                                    <\/div>\r\n                                                                                                                                                            <\/div>\r\n                                                                    <\/div>\r\n                                                                <\/div>\r\n                                                            <\/div>\r\n                                                                                                    <\/div>\r\n                                        <\/div>\r\n                                                                        <div class=\"tab-pane fade \" id=\"product-input-output\" role=\"tabpanel\" aria-labelledby=\"product-control-input-output\" itemprop=\"content\">\r\n                                        <div class=\"row\">\r\n                                            <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                Input\/Output                                            <\/div>\r\n                                                                                                <a class=\"col-md-6 col-sm-12\" data-fancybox=\"product-input-output\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_front_panel.jpg\">\r\n                                                        <img loading=\"lazy\" width=\"900\" height=\"735\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_front_panel.jpg\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\" srcset=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_front_panel.jpg 900w, https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_front_panel-300x245.jpg 300w, https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_front_panel-768x627.jpg 768w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\">                                                    <\/a>\r\n                                                                                                        <a class=\"col-md-6 col-sm-12\" data-fancybox=\"product-input-output\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_back_panel.jpg\">\r\n                                                        <img loading=\"lazy\" width=\"900\" height=\"735\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_back_panel.jpg\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\" srcset=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_back_panel.jpg 900w, https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_back_panel-300x245.jpg 300w, https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_back_panel-768x627.jpg 768w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\">                                                    <\/a>\r\n                                                                                            <\/div>\r\n                                    <\/div>\r\n                                                                            <div class=\"tab-pane fade \" id=\"product-technologies\" role=\"tabpanel\" aria-labelledby=\"product-control-technologies\" itemprop=\"content\">\r\n                                            <div class=\"row\">\r\n                                                <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                    Technologies                                                <\/div>\r\n                                                                                                    <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                        <div class=\"sc--separator-elements\">\r\n                                                            <div class=\"row\">\r\n                                                                                                                                    <a class=\"col-md-6 col-sm-12 mb-3\" data-fancybox=\"product-technologies-0\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz-IP64.png\">\r\n                                                                        <img loading=\"lazy\" width=\"140\" height=\"140\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz-IP64.png\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\">                                                                    <\/a>\r\n                                                                                                                                    <div class=\"col-md-6 col-sm-12\">\r\n                                                                                                                                            <div class=\"product-tab-title-sub\" itemprop=\"title\">\r\n                                                                            IP64 CERTIFICATION                                                                        <\/div>\r\n                                                                                                                                                <div itemprop=\"content\">\r\n                                                                            <p>\u2018<\/p>\r\n                                                                        <\/div>\r\n                                                                                                                                        <\/div>\r\n                                                            <\/div>\r\n                                                        <\/div>\r\n                                                    <\/div>\r\n                                                                                                        <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                        <div class=\"sc--separator-elements\">\r\n                                                            <div class=\"row\">\r\n                                                                                                                                    <a class=\"col-md-6 col-sm-12 mb-3\" data-fancybox=\"product-technologies-1\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Water_Jet-6.png\">\r\n                                                                        <img loading=\"lazy\" width=\"206\" height=\"237\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Water_Jet-6.png\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\">                                                                    <\/a>\r\n                                                                                                                                    <div class=\"col-md-6 col-sm-12\">\r\n                                                                                                                                            <div class=\"product-tab-title-sub\" itemprop=\"title\">\r\n                                                                            WATER JET TESTED                                                                        <\/div>\r\n                                                                                                                                                <div itemprop=\"content\">\r\n                                                                            <p>The protection grade IP64 define all the Hertz Marine products as totally protected against water jets of different entities, making them highly performant in the marine environment.<\/p>\r\n                                                                        <\/div>\r\n                                                                                                                                        <\/div>\r\n                                                            <\/div>\r\n                                                        <\/div>\r\n                                                    <\/div>\r\n                                                                                                        <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                        <div class=\"sc--separator-elements\">\r\n                                                            <div class=\"row\">\r\n                                                                                                                                    <a class=\"col-md-6 col-sm-12 mb-3\" data-fancybox=\"product-technologies-2\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_PCB_corrosion-2.png\">\r\n                                                                        <img loading=\"lazy\" width=\"152\" height=\"180\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_PCB_corrosion-2.png\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\">                                                                    <\/a>\r\n                                                                                                                                    <div class=\"col-md-6 col-sm-12\">\r\n                                                                                                                                            <div class=\"product-tab-title-sub\" itemprop=\"title\">\r\n                                                                            CORROSION PROTECTION                                                                        <\/div>\r\n                                                                                                                                                <div itemprop=\"content\">\r\n                                                                            <p>Electronics components corrosion caused by exposure in wet environments is totally neutralized by the use of dedicated marine grade (epoxy coated) PCB boards.<\/p>\r\n                                                                        <\/div>\r\n                                                                                                                                        <\/div>\r\n                                                            <\/div>\r\n                                                        <\/div>\r\n                                                    <\/div>\r\n                                                                                                        <div class=\"col-md-6 col-xs-12 mb-5\">\r\n                                                        <div class=\"sc--separator-elements\">\r\n                                                            <div class=\"row\">\r\n                                                                                                                                    <a class=\"col-md-6 col-sm-12 mb-3\" data-fancybox=\"product-technologies-3\" itemprop=\"content\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Salt_Fog-6.png\">\r\n                                                                        <img loading=\"lazy\" width=\"201\" height=\"237\" src=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Salt_Fog-6.png\" class=\"attachment-full size-full\" alt=\"HMP 4D\" decoding=\"async\">                                                                    <\/a>\r\n                                                                                                                                    <div class=\"col-md-6 col-sm-12\">\r\n                                                                                                                                            <div class=\"product-tab-title-sub\" itemprop=\"title\">\r\n                                                                            SALT FOG TESTED                                                                        <\/div>\r\n                                                                                                                                                <div itemprop=\"content\">\r\n                                                                            <p>To satisfy the standards required by ASTM-B117, Hertz Marine products are tested with massive salt fog spray to ensure a complete resistance to corrosion, typical of this atmospheric agent.<\/p>\r\n                                                                        <\/div>\r\n                                                                                                                                        <\/div>\r\n                                                            <\/div>\r\n                                                        <\/div>\r\n                                                    <\/div>\r\n                                                                                                <\/div>\r\n                                        <\/div>\r\n                                                                            <div class=\"tab-pane fade \" id=\"product-downloads\" role=\"tabpanel\" aria-labelledby=\"product-control-downloads\" itemprop=\"content\">\r\n                                            <div class=\"row\">\r\n                                                <div class=\"col-md-6 col-sm-12\">\r\n                                                    <div class=\"product-tab-title mb-3\" itemprop=\"title\">\r\n                                                        Downloads                                                    <\/div>\r\n                                                                                                                <div class=\"float-start w-100 mb-5\">\r\n                                                                <a target=\"_blank\" class=\"document-file product-manual-file float-left position-relative d-flex align-items-center\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Marine-Amplifier-HMP_OMArtwork_rev1.0E1-1.pdf\" download=\"\" itemprop=\"content\" rel=\"noopener\">\r\n                                                                    Owner&#8217;s Manual                                                                <\/a>\r\n                                                            <\/div>\r\n                                                                                                                        <div class=\"float-start w-100 mb-5\">\r\n                                                                <a target=\"_blank\" class=\"document-file product-manual-file float-left position-relative d-flex align-items-center\" href=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/HERTZ_Marine-Powersports_HMP4D.pdf\" download=\"\" itemprop=\"content\" rel=\"noopener\">\r\n                                                                    Technical Datasheet                                                                <\/a>\r\n                                                            <\/div>\r\n                                                                                                            <\/div>\r\n                                                                                            <\/div>\r\n                                        <\/div>\r\n                                                            <\/div>\r\n                    <\/div>","protected":false},"excerpt":{"rendered":"Ch: 4 &#8211; 2 | 600 W Thanks to the ultra-compact cast-aluminium chassis (IP64 rated), the HMP 4D amplifier is nature-proof, being the ideal choice for UTV\/ATV\/motorcycle installations. It features an incredible power\/size ratio and an easy setup thanks to the integrated crossover filter. The Front End section features a complete and bypassable crossover system,&hellip;<p><a class=\"more-link\" href=\"https:\/\/www.rvsperformance.com\/live\/shop\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\/\" title=\"Continue reading &lsquo;D-Class 4 CH Amplifier 75 WRMS x 4 at 2&Omega; (IP64 rated)&rsquo;\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>","protected":false},"featured_media":43885,"comment_status":"open","ping_status":"closed","template":"","meta":[],"pwb-brand":[22130],"product_brand":[],"product_cat":[22124],"product_tag":[],"class_list":{"0":"post-43998","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"pwb-brand-hertz","7":"product_cat-amplifiers","9":"first","10":"instock","11":"sale","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>D-Class 4 CH Amplifier 75 WRMS x 4 at 2&Omega; (IP64 rated) - RVS Performance<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rvsperformance.com\/live\/shop\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D-Class 4 CH Amplifier 75 WRMS x 4 at 2&Omega; (IP64 rated) - RVS Performance\" \/>\n<meta property=\"og:description\" content=\"Ch: 4 &#8211; 2 | 600 W Thanks to the ultra-compact cast-aluminium chassis (IP64 rated), the HMP 4D amplifier is nature-proof, being the ideal choice for UTV\/ATV\/motorcycle installations. 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The Front End section features a complete and bypassable crossover system,&hellip;Continue reading &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rvsperformance.com\/live\/shop\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\/\" \/>\n<meta property=\"og:site_name\" content=\"RVS Performance\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-07T21:47:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rvsperformance.com\/live\/wp-content\/uploads\/2024\/03\/Hertz_Marine_Amplifier_HDP_4D_emo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"735\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.rvsperformance.com\\\/live\\\/shop\\\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\\\/\",\"url\":\"https:\\\/\\\/www.rvsperformance.com\\\/live\\\/shop\\\/d-class-4-ch-amplifier-75-wrms-x-4-at-2-ip64-rated\\\/\",\"name\":\"D-Class 4 CH Amplifier 75 WRMS x 4 at 2&Omega; 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