{"product_id":"soundqubed-c4-900-4-channel-car-amplifier-900w-full-range-car-audio-amp","title":"SoundQubed C4-900 4-Channel Car Amplifier – 900W Full Range Car Audio Amp","description":"\u003cp\u003eThe C4-900 is a step up for people who want their speakers to keep up with the subs. It puts out 4 x 225 watts RMS at 2 ohms, or 2 x 400 bridged at 4 ohms, from a chassis under 7 inches long.\u003c\/p\u003e\n\u003cp\u003eChannels 3 and 4 get a full high-pass, low-pass and band-pass crossover with an X1\/X10 multiplier, so you can set the points anywhere from 20 Hz up to 20 kHz. That's handy for a front stage with midbass and tweeters, or for running a small sub off one bridged pair.\u003c\/p\u003e\n\u003cp\u003eEvery C Series amp is checked on Audio Precision test gear before it leaves SoundQubed, and each one carries thermal, overload, DC output, short-circuit and voltage protection.\u003c\/p\u003e\n\u003ch3\u003eC4-900 Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePower\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 4 ohm\u003c\/td\u003e\n\u003ctd\u003e4 x 130W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 2 ohm\u003c\/td\u003e\n\u003ctd\u003e4 x 225W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 4 ohm Bridged\u003c\/td\u003e\n\u003ctd\u003e2 x 400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eAudio\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e10Hz-25KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal to Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e93dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency @ 4 ohm\u003c\/td\u003e\n\u003ctd\u003e85%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping Factor\u003c\/td\u003e\n\u003ctd\u003e92\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Separation\u003c\/td\u003e\n\u003ctd\u003e40dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e22K ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion (THD)\u003c\/td\u003e\n\u003ctd\u003e0.10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Level Input Range\u003c\/td\u003e\n\u003ctd\u003e350mV-7V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelectable X-Over (CH 1\/2)\u003c\/td\u003e\n\u003ctd\u003eHPF \/ FULL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelectable X-Over (CH 3\/4)\u003c\/td\u003e\n\u003ctd\u003eHPF \/ FULL \/ BPF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX-Over Filter Range (CH 3\/4)\u003c\/td\u003e\n\u003ctd\u003eHPF: 20Hz-2kHz \/ LPF: 100Hz-20kHz (X1\/X10)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX-Over Frequency Multiplier\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd\u003eDigital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Type\u003c\/td\u003e\n\u003ctd\u003eStereo Full-Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Impedance\u003c\/td\u003e\n\u003ctd\u003e2 Ohm Stereo \/ 4 Ohm Bridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003ePower \/ Protect \/ Clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input Terminal Size\u003c\/td\u003e\n\u003ctd\u003e4GA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Fuse\u003c\/td\u003e\n\u003ctd\u003e80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver-Load Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Output Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort Circuit Output Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Input Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiffany-Style RCA Inputs\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Color\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDimensions\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e6.61\" \/ 168mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Width\u003c\/td\u003e\n\u003ctd\u003e5.91\" \/ 150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Height\u003c\/td\u003e\n\u003ctd\u003e2.17\" \/ 55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeatsink Length\u003c\/td\u003e\n\u003ctd\u003e5.43\" \/ 138mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv\u003e\n\u003ca href=\"https:\/\/soundqubed.com\/wp-content\/uploads\/2026\/10\/SoundQubed_C4-900_Specs.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003cdiv\u003e\n\u003cspan\u003eSpec Sheet\u003c\/span\u003e\n\u003ch4\u003eSoundQubed C4-900\u003c\/h4\u003e\n\u003cp\u003eEvery spec, the recommended fuse and wire size, and the full dimensions on one printable page.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/soundqubed.com\/wp-content\/uploads\/2026\/10\/SoundQubed_C4-900_Specs.pdf\" rel=\"noopener\" target=\"_blank\"\u003eView Spec Sheet\u003c\/a\u003e\u003ca download=\"\" href=\"https:\/\/soundqubed.com\/wp-content\/uploads\/2026\/10\/SoundQubed_C4-900_Specs.pdf\" rel=\"noopener\" target=\"_blank\"\u003eDownload PDF\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SoundQubed","offers":[{"title":"Default Title","offer_id":51550421057705,"sku":"C4-900","price":399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/8452\/6249\/files\/f5a42e8a-c1d7-4cb1-b3ad-34cc9b00f79a__49839.1792876983_fb258162-5f12-4084-9dea-ec7fb234bbcf.jpg?v=1794579186","url":"https:\/\/audiohoggz.com\/products\/soundqubed-c4-900-4-channel-car-amplifier-900w-full-range-car-audio-amp","provider":"Audio Hoggz","version":"1.0","type":"link"}