{"product_id":"max-300w-4-channel-a-b-class-dsp-car-amplifier-rms-4-x-75w-in-car-dsp-digital-audio-processor-improved-sound-quality","title":"MAX.300W 4-Channel A\/B Class DSP Car Amplifier, RMS.4 X 75W In-Car DSP Digital Audio Processor, Improved Sound Quality","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eAnalog 3 Brand EQ\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eBASS\/CEN\/TR+12dB\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eAudio Encoding\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMultichannel\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eQ-PERTORS\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCertification\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCE,FCC,RoHS\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eColor Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eblack\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eFrequency Range (Hz)\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e20hz-20kHz\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eImpedance\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e4 ohms\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eInput channel\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e4 Channels\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eItem Type\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAMPLIFIERS\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAluminum alloy\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eQP-H4.7AMP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOut Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e300W\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e4x45W THD 1%,4x75W THD 10%\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePower amplifier technology\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eClass A\/B\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSNR\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e85db\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSeparetion Degree\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e70dB\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSignal To Noise Ratio\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e85dB\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eWorking Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e10~16V\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-weight:bold\"\u003eWhy Choose Our 4-Channel Car Amplifier?\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003eAndroid-Specific Tuning: Optimized for Android’s audio protocols, eliminating compatibility issues.\u003cbr\u003e\u003cbr\u003eVersatile Power Options: Switch between clean RMS power and max output based on your needs.\u003cbr\u003e\u003cbr\u003eProfessional-Grade Sound: Lab-tested metrics (SNR, separation, frequency response) rival high-end amplifiers.\u003cbr\u003e\u003cbr\u003eUser-Friendly EQ: Analog controls let you adjust sound in seconds, no tech expertise needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_media\"\u003e\u003cdiv class=\"video-container-5000371420400\"\u003e\u003cdiv class=\"detail-video\" id=\"5000371420400\" data-previewurl=\"https:\/\/ae01.alicdn.com\/kf\/Sbefeb78f8b0f4c4f92f1038e3ff2c62dr.jpg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-weight:bold\"\u003eFeature:\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003e1. Class A\/B Amplifier Technology (Android-Optimized)\u003cbr\u003eDesigned to seamlessly integrate with Android devices, our Class A\/B amplifier combines the best of both worlds: the warm, low-distortion performance of Class A for subtle audio details and the efficiency of Class B for high-power output. Experience smooth, natural sound across all music genres, from vocals to bass-heavy tracks, without sacrificing energy efficiency.\u003cbr\u003e\u003cbr\u003e2. 4-Channel High-Power Output\u003cbr\u003e4 × 45W RMS @ 1% THD: Enjoy studio-quality sound with ultra-low distortion (1%), perfect for daily listening when clarity matters most.\u003cbr\u003e4 × 75W Max Power @ 10% THD: Unleash dynamic power for loud, immersive audio during road trips or parties—ideal for pushing larger speakers or subwoofers.\u003cbr\u003eWith 4 independent channels, you can power front\/rear speakers separately, creating a balanced stereo field that fills your entire vehicle.\u003cbr\u003e\u003cbr\u003e3. Premium Audio Performance Metrics\u003cbr\u003eSignal-to-Noise Ratio (SNR): 85 dB: Minimize background noise and static, ensuring pure, unfiltered audio even at high volumes.\u003cbr\u003eChannel Separation: 70 dB: Maintain clear distinction between left\/right channels, delivering precise sound staging and immersive spatial awareness.\u003cbr\u003eFrequency Response: 20–20 kHz (-3 dB): Covers the full range of human hearing, reproducing deep bass, crisp midrange, and sparkling treble with accuracy.\u003cbr\u003e\u003cbr\u003e4. Analog 3-Band EQ for Customized Sound\u003cbr\u003eTailor your audio to your preferences with the built-in BASS\/CEN\/TRE (Bass\/Center\/Treble) ±12 dB Equalizer. Boost the low end for thumping beats, enhance vocals with the center control, or brighten treble for crisp instruments—no complex apps required, just intuitive analog dials for on-the-go adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1153cb93c3904881bd0c7fa0dbfd0dc1p.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:20px;font-weight:900;line-height:28px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-title\"\u003eSpecification:\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003eType: Car amplifier\u003cbr\u003ePower amplifier technology: A\/B class for Android device\u003cbr\u003eOutput channel:4 Channel\u003cbr\u003eOutput:4x45W THD 1%; 4x75W THD 10%\u003cbr\u003eSNR:85dB\u003cbr\u003eSeparation Degree:70dB\u003cbr\u003eFrequency responserange :20-20KHz(-3dB)\u003cbr\u003eAnalog 3 BAND EQ:BASS\/CEN\/TR±12dB\u003cbr\u003e\u003cbr\u003ePackage:\u003cbr\u003e1*Amplifier\u003cbr\u003e1*Instruction Manual\u003cbr\u003e1*Connecting Cable\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S4bd390196be34a3cb23d1cd4dbbb871da.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sae81e7dc460d4458a350def58d2bcd3fV.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sd2f2bf1e4ff54de293b306d7297bb426g.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd4503c932b314cc6866a8c8fde5babcfC.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa11847e851624e1394f163a65addaef1A.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-weight:bold\"\u003eCompatibility \u0026amp; Installation:\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003eAndroid Device Compatibility: Works seamlessly with Android head units, smartphones, and tablets via standard audio inputs (RCA or AUX).\u003cbr\u003e\u003cbr\u003eUniversal Fit: Compact design fits most car dashboards, trunks, or under-seat spaces—installation is straightforward with included wiring harness and mounting hardware.\u003cbr\u003e\u003cbr\u003eDurable Build: Constructed with heat-resistant materials and overcurrent\/overheat protection, ensuring reliable performance even in extreme car conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sfc37ad63b4d648218b7768ce82c0945f0.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S0e8b4c07581f4fdfb5ce19615e95f634p.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sbfced20d6fd34d59864b8ef33dd1a2aag.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\u003cp style=\"font-weight:bold\"\u003eUpgrade your in-car sound system with our 4-Channel Class A\/B Car Amplifier—engineered specifically for Android devices to deliver powerful, crystal-clear audio that transforms every drive. Whether you’re cruising through city streets or embarking on a road trip, this amplifier unlocks the full potential of your car speakers, blending dynamic power with precise sound reproduction.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd738963ada7d4c1590e98e14bf7df451r.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-weight:bold\"\u003eNote:\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003e1. Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. \u003cbr\u003e\u003cbr\u003e2. The measurement allowed error is 1-2cm.\u003cbr\u003e\u003cbr\u003e3. Safety First: Disconnect the car’s negative battery terminal before starting any wiring work. This prevents electrical shocks, short circuits, or damage to the amplifier\/vehicle electronics.\u003cbr\u003e\u003cbr\u003e4. Check Compatibility: Confirm your car’s electrical system operates at 12V DC (standard for most vehicles) to match the amplifier’s voltage requirement. Verify that your speakers’ impedance (ohms) aligns with the amplifier’s minimum rating (refer to the product manual for specific values).\u003cbr\u003e\u003cbr\u003e5. Gather Tools \u0026amp; Materials: Prepare essential tools: wire cutters\/strippers, crimpers, electrical tape, zip ties, a drill (if mounting), and a dedicated fuse (as specified in the manual). Use high-quality wiring: minimum 8-gauge power cable, 16-18-gauge speaker wire, and shielded RCA cables to reduce interference.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-weight:bold\"\u003ePost-Installation Checks \u0026amp; Debugging:\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003eReconnect Battery: After all wiring and mounting are complete, reconnect the car’s negative battery terminal.\u003cbr\u003e\u003cbr\u003eInitial Testing:\u003cbr\u003eTurn on the car and Android device, then gradually increase the amplifier’s volume. Check for distortion, humming, or no sound:\u003cbr\u003eDistortion may indicate mismatched speaker impedance or incorrect EQ settings.\u003cbr\u003eHumming\/static often stems from poor grounding, crossed wires, or unshielded RCA cables.\u003cbr\u003e\u003cbr\u003eNo sound: Verify all connections are secure, fuses are intact, and the amplifier is receiving power (check LED indicators).\u003cbr\u003eFinal Adjustments:\u003cbr\u003eSet the amplifier’s gain control to a moderate level (avoid maxing it out) to prevent clipping.\u003cbr\u003eUse the 3-band EQ to fine-tune sound, but avoid extreme ±12 dB adjustments—this can strain speakers and the amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Default Title","offer_id":55150599373099,"sku":"\u003cnone\u003e","price":182.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S1153cb93c3904881bd0c7fa0dbfd0dc1p.webp?v=1788157855","url":"https:\/\/yoeruyo.com\/products\/max-300w-4-channel-a-b-class-dsp-car-amplifier-rms-4-x-75w-in-car-dsp-digital-audio-processor-improved-sound-quality","provider":"Yoeruyo","version":"1.0","type":"link"}