{"product_id":"ruthless-audio-800-4-micro-4-channel-amplifier","title":"Ruthless Audio 800.4 Micro 4 Channel Amplifier","description":"\u003cp\u003eWant a stronger four-channel speaker stage without dedicating the whole trunk to an amp? The \u003cstrong\u003eRuthless Audio 800.4 Micro 4-Channel Amplifier\u003c\/strong\u003e provides a listed \u003cstrong\u003e800W total RMS\u003c\/strong\u003e in a chassis only 9.25\" long. It offers room to power front and rear speakers, build a component setup, or use bridged channels when the speakers and load are a proper match. Its compact footprint makes it especially useful when mounting space is limited.\u003c\/p\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eClass-D amplifier\u003c\/strong\u003e is rated at \u003cstrong\u003e200W x 4 @ 2 ohms\u003c\/strong\u003e and \u003cstrong\u003e120W x 4 @ 4 ohms\u003c\/strong\u003e at 14.4V. A listed 95dB signal-to-noise ratio and adjustable high-pass (20Hz–8kHz) and low-pass (50Hz–8kHz) filters give you specifications and controls to consider when designing your system. The listed fuse rating is 80A and operating range is 9–16V; size the wiring and confirm the vehicle's electrical supply for the actual installation.\u003c\/p\u003e\n\n\u003cp\u003eAt \u003cstrong\u003e9.25\" overall length\u003c\/strong\u003e, with an \u003cstrong\u003e8.25\" heatsink\u003c\/strong\u003e, \u003cstrong\u003e4.7\" width\u003c\/strong\u003e, and \u003cstrong\u003e2.2\" height\u003c\/strong\u003e, this amp can fit where a larger chassis may not. Use all four channels for separate speaker runs or bridge channels 1+2 and 3+4 into two channels at the specified minimum load. Whether tucked under a seat or mounted in a custom space, leave enough access for wiring and ventilation.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Ruthless Audio 800.4 Micro Amplifier?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e800W Total RMS Rating\u003c\/strong\u003e — Four channels rated at 200W each into 2Ω at 14.4V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Micro Chassis\u003c\/strong\u003e — A 9.25\" overall length offers more options for tight installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass-D Design\u003c\/strong\u003e — A compact amplifier topology suited to space-conscious systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable Four-Channel Layout\u003c\/strong\u003e — Run four speakers independently or bridge channel pairs for a two-channel configuration with suitable loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Pass \u0026amp; Low-Pass Filters\u003c\/strong\u003e — Listed adjustment ranges are 20Hz–8kHz HPF and 50Hz–8kHz LPF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e95dB Signal-to-Noise Rating\u003c\/strong\u003e — A published measurement to compare with your system goals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9–16V Operating Range\u003c\/strong\u003e — Check your vehicle's supply against the amplifier's stated range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Flexibility\u003c\/strong\u003e — A 4.7\" width and 2.2\" height help with under-seat and custom placement, subject to airflow and clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAmplifier \u0026amp; Wiring Recommendations\u003c\/h2\u003e\n\u003cp\u003eConsider the 800.4 for component or coaxial speakers with suitable impedance and RMS handling in the 100–200W-per-channel range. Feed it a compatible four-channel RCA signal from a head unit or DSP. A 4-gauge power and ground kit is recommended in the original listing for its 80A fuse rating; confirm the cable and protection sizes for the actual run. When bridging, verify speaker power handling and keep the load at a minimum of 4Ω per bridged pair.\u003c\/p\u003e\n\u003cp\u003eKeep power and ground runs appropriately sized and secured, and separate RCA routing from power wiring when possible to reduce noise. For an under-seat or enclosed mount, check fit and provide approximately 1–2\" of clearance around the heatsink for airflow. Protect connections from moisture if the installation is on a motorcycle or powersports vehicle; compact does not automatically mean weatherproof.\u003c\/p\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power (2Ω)\u003c\/td\u003e\n\u003ctd\u003e200W x 4 @ 14.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power (4Ω)\u003c\/td\u003e\n\u003ctd\u003e120W x 4 @ 14.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal RMS Power\u003c\/td\u003e\n\u003ctd\u003e800W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd\u003eClass-D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e4 (Bridgeable to 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20Hz – 8kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Pass Filter\u003c\/td\u003e\n\u003ctd\u003e20Hz – 8kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Pass Filter\u003c\/td\u003e\n\u003ctd\u003e50Hz – 8kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e95dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Rating\u003c\/td\u003e\n\u003ctd\u003e80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e9–16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e9.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeatsink Length\u003c\/td\u003e\n\u003ctd\u003e8.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e4.7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e2.2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 Year Standard \/ 2 Year Extended Available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size wiring kit do I need for the Ruthless Audio 800.4?\u003c\/strong\u003e\u003cbr\u003eA: The original listing recommends a 4-gauge power and ground kit for the 80A fuse rating. Confirm wiring and protective fusing based on your cable length and installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I bridge the 800.4 down to 2 channels?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Bridge channels 1+2 and 3+4 for two higher-output channels, using speakers suited to the bridged output and a minimum 4Ω load per pair.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the 800.4 compare to the Ruthless Audio 400.4?\u003c\/strong\u003e\u003cbr\u003eA: At 2Ω and 14.4V, the listed four-channel ratings are 200W x 4 for the 800.4 versus 100W x 4 for the 400.4. The 800.4 is longer at 9.25\" versus 7.25\", so compare both power needs and available mounting space.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 800.4 suitable for motorcycle or powersports installs?\u003c\/strong\u003e\u003cbr\u003eA: Its compact dimensions make it an option to consider where space is limited. Check electrical capacity, secure mounting, ventilation, and protection from weather before choosing that location.\u003c\/p\u003e","brand":"Ruthless Audio","offers":[{"title":"No","offer_id":46315128356908,"sku":null,"price":249.99,"currency_code":"USD","in_stock":true},{"title":"Yes","offer_id":46315128389676,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0656\/8964\/9196\/files\/xcgvbnxfnjsrth.png?v=1790793817","url":"https:\/\/www.4staraudio.com\/products\/ruthless-audio-800-4-micro-4-channel-amplifier","provider":"4StarAudio","version":"1.0","type":"link"}