Ruthless Audio 800.4

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The Ruthless Audio 800.4 is the do-everything full-size 4-channel amplifier in the lineup. Built on Korean Class-D technology, it delivers 220W × 4 at 2 ohms, 100W × 4 at 4 ohms, o r 440W × 2 bridged at 4 ohms — enough flexibility for a full front/rear speaker stage, high-output mids, or a bridged 2-channel setup.WHY CHOOSE THE RUTHLESS AUDIO 800.4? 220W × 4 @ 2Ω (14.4V) — strong per-channel power for upgraded components and pro-audio speakers. 100W × 4 @ 4Ω — clean headroom for traditional full-range systems. 440W × 2 Bridged @ 4Ω — bridge channels in pairs when more power per channel is needed. 1-Year 2Ω Warranty Coverage — standard manufacturer defect coverage includes operation down to 2 ohms per channel when warranty conditions are met. Korean Class-D Platform — efficient full-range output with serious power density. Clip Light Function — visual clipping feedback helps with gain setup and speaker protection. Wide-Range Crossovers — HPF and LPF controls with x10 multiplier let you tune mids, highs, or bridged applications without a basic one-size-fits-all crossover. Tiffany-Style RCA Inputs and 4 AWG power inputs for a clean, secure installation. FULL SPECIFICATIONS RMS Power @ 4Ω (14.4V) 100W × 4 RMS Power @ 2Ω (14.4V) 220W × 4 Bridged Power @ 4Ω (14.4V) 440W × 2 Standard Warranty Load Down to 2Ω per channel when warranty conditions are met Amplifier Class Korean Class-D Channels 4 (bridgeable to 2) Operating Voltage 8–16V Input Sensitivity 0.2V–6V High-Pass Filter 20Hz–800Hz / 200Hz–8kHz with x10 Low-Pass Filter 50Hz–800Hz / 500Hz–8kHz with x10 THD Show more