{"product_id":"ruthless-audio-800-4-micro-4-channel-amplifier","title":"Ruthless Audio 800.4 Micro 4 Channel Amplifier","description":"\u003cp\u003eThe \u003cstrong\u003eRuthless Audio 800.4 Micro 4-Channel Amplifier\u003c\/strong\u003e delivers a true \u003cstrong\u003e800 watts of total RMS power\u003c\/strong\u003e in one of the most compact amp chassis available — measuring just 9.25\" in overall length. Built for enthusiasts who demand serious full-system output without sacrificing install flexibility, the 800.4 hits the sweet spot between daily-driver convenience and competition-grade authority. Whether you're powering a set of high-end component speakers, running a full front and rear stage, or bridging down to 2 channels for bigger loads, the 800.4 Micro delivers the muscle and precision your system deserves — in a chassis slim enough to disappear almost anywhere.\u003c\/p\u003e\n\n\u003cp\u003eUnder the hood, the 800.4 runs a high-efficiency \u003cstrong\u003eClass-D topology\u003c\/strong\u003e rated at \u003cstrong\u003e200W x 4 @ 2 ohms\u003c\/strong\u003e and \u003cstrong\u003e120W x 4 @ 4 ohms\u003c\/strong\u003e at 14.4V — real, usable power across both impedance loads. The signal-to-noise ratio of 95dB keeps your music clean and distortion-free at any volume, while onboard high-pass (20Hz–8kHz) and low-pass (50Hz–8kHz) filters give you precise crossover control without external processors. An 80A fuse rating and 9–16V operating voltage range ensure reliable performance across a wide range of vehicle electrical systems, from stock alternators to upgraded charging setups.\u003c\/p\u003e\n\n\u003cp\u003eAt just \u003cstrong\u003e9.25\" overall length\u003c\/strong\u003e (8.25\" heatsink), \u003cstrong\u003e4.7\" wide\u003c\/strong\u003e, and \u003cstrong\u003e2.2\" tall\u003c\/strong\u003e, the 800.4 fits under seats, behind panels, and inside custom enclosures where full-size amps simply won't go. Bridge channels 1+2 and 3+4 for a 2-channel configuration with higher per-channel output to drive component midranges or a compact subwoofer. Pair it with a quality 4-channel RCA signal from your head unit or DSP, and you have a complete, high-output amplifier solution in a ruthlessly compact package.\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 Power\u003c\/strong\u003e — 200W x 4 @ 2Ω delivers real, rated output — enough authority to drive high-end component speakers and pro-audio setups with ease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact Micro Form Factor\u003c\/strong\u003e — 9.25\" overall length fits in tight installs, under seats, behind panels, and in space-limited custom builds where traditional amps won't fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Efficiency Class-D Design\u003c\/strong\u003e — Runs cool and clean, maximizing power transfer while minimizing heat and electrical load on your vehicle's charging system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable 4-Channel Configuration\u003c\/strong\u003e — Bridge channels in pairs for a 2-channel setup with higher per-channel output, giving you full system flexibility from a single amp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard High \u0026amp; Low Pass Filters\u003c\/strong\u003e — 20Hz–8kHz HPF and 50Hz–8kHz LPF let you dial in crossover points without additional signal processors or active crossovers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e95dB Signal-to-Noise Ratio\u003c\/strong\u003e — Exceptionally quiet background noise floor for crystal-clear audio reproduction at any volume level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Operating Voltage Range\u003c\/strong\u003e — 9–16V compatibility handles everything from stock alternators to high-output charging systems without issue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuthless Tough Build Quality\u003c\/strong\u003e — Proven rugged construction with premium internal components engineered for long-term reliability in demanding install environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAmplifier \u0026amp; Wiring Recommendations\u003c\/h2\u003e\n\u003cp\u003eThe Ruthless Audio 800.4 is an ideal match for a set of component speakers or coaxial drivers rated in the 100–200W RMS range per channel. Pair it with a quality 4-channel RCA signal from your head unit or DSP processor for best results. For wiring, a 4-gauge power and ground kit is recommended to support the 80A fuse rating and ensure clean, stable power delivery. If bridging to 2 channels, verify your speakers can handle the increased output and are rated for 4 ohms bridged minimum.\u003c\/p\u003e\n\u003cp\u003eKeep power and ground runs as short as possible, and route RCA cables away from power wiring to eliminate noise. At just 2.2\" tall, the 800.4 is an excellent choice for under-seat installs — ensure at least 1–2\" of airflow clearance around the heatsink for optimal thermal management in enclosed spaces.\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: A 4-gauge power and ground wiring kit is recommended to properly support the 80A fuse rating and deliver clean, stable power to the amplifier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I bridge the 800.4 down to 2 channels?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the 800.4 is fully bridgeable. Bridge channels 1+2 and 3+4 for a 2-channel configuration with higher per-channel output. Ensure your speakers are rated for the bridged impedance load (minimum 4Ω bridged).\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: The 800.4 doubles the output of the 400.4 — 200W x 4 vs. 100W x 4 at 2 ohms — while maintaining the same ultra-compact micro form factor and Class-D efficiency. Choose the 800.4 when you need more headroom for high-end component speakers or pro-audio drivers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 800.4 suitable for motorcycle or powersports installs?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the compact 9.25\" footprint and wide 9–16V operating voltage range make the 800.4 a strong choice for motorcycle, ATV, UTV, and marine audio builds where space is limited but output demands are higher.\u003c\/p\u003e","brand":"Ruthless Audio","offers":[{"title":"No","offer_id":43708264710211,"sku":null,"price":249.99,"currency_code":"USD","in_stock":true},{"title":"Yes","offer_id":43708264742979,"sku":null,"price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/9575\/7123\/files\/xcgvbnxfnjsrth.png?v=1787590673","url":"https:\/\/www.trinitycaraudio.com\/products\/ruthless-audio-800-4-micro-4-channel-amplifier","provider":"Trinity Car Audio","version":"1.0","type":"link"}