{"product_id":"4-channel-dsp-car-amplifier-300w-max-4x75w-rms-a-b-class-car-audio-amp-digital-sound-processor-for-vehicle-stereo-system","title":"4-Channel DSP Car Amplifier, 300W Max \/ 4x75W RMS A\/B Class Car Audio Amp, Digital Sound Processor for Vehicle Stereo System","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\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_media\"\u003e\u003cdiv class=\"video-container-5000489226025\"\u003e\u003cdiv class=\"detail-video\" id=\"5000489226025\" data-previewurl=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1c4021d0810f4e37b3c57724e16c1e5em.jpg\"\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cbr\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\/Sf611b86a70e44e6b891ff91969d47ddeN.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\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\/S90171438fe2d496f98af5c4a738a5ebeB.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\"\u003eDescription:\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* Cable\u003cbr\u003e1* User manual\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S13739588bbd4491ebceac7faf9760c288.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\"\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:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf252b735866e43d584171e7d16ca668ak.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbf37f3bd25224f2bad39298b1da32a151.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S268c78a626bb48cc9d59b6e48872b902h.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S67927199f3134435ae2cb7d0042e0b02D.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\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\u003cdiv class=\"detailmodule_image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc62baa0bcc854dd0af76a4d0762e42f5v.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd9da4a4a16614a3a92c89c090171fbaeP.jpg\" slate-data-type=\"image\"\u003e\n\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\"\u003eAttention:\u003c\/p\u003e\n\u003cp style=\"font-weight:bold\"\u003eSafety 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\u003eCheck 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\u003eGather 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.\u003cbr\u003e\u003cbr\u003eReconnect Battery: After all wiring and mounting are complete, reconnect the car’s negative battery terminal.\u003cbr\u003e\u003cbr\u003eInitial Testing: Turn 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\u003e\u003cbr\u003eFinal Adjustments: Set 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.\u003cbr\u003e\u003cbr\u003eDue to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.\u003cbr\u003e\u003cbr\u003ePlease allow 1-2cm measuring deviation due to manual measurement.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Default Title","offer_id":55150572962091,"sku":"\u003cnone\u003e","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sf611b86a70e44e6b891ff91969d47ddeN.webp?v=1788157835","url":"https:\/\/yoeruyo.com\/products\/4-channel-dsp-car-amplifier-300w-max-4x75w-rms-a-b-class-car-audio-amp-digital-sound-processor-for-vehicle-stereo-system","provider":"Yoeruyo","version":"1.0","type":"link"}