Don’t let the size fool you — the Ruthless Audio 1500.1 Micro is a full-blown bass amp packed into a chassis barely over a foot long. It delivers a true 1,500W RMS at 1 ohm with exceptional efficiency, making it a strong choice for tight installs, stealth builds, and daily systems that need serious subwoofer authority without a full-size amplifier footprint.WHY CHOOSE THE RUTHLESS AUDIO 1500.1 MICRO? 1,500W RMS @ 1Ω (14.4V) — serious monoblock power from an ultra-compact chassis. 84% / 89% / 93% Efficiency — published efficiency at 1, 2, and 4 ohms helps reduce wasted energy and heat. 1-Year 1Ω Warranty Coverage — standard manufacturer defect coverage includes operation down to 1 ohm when warranty conditions are met. 12-13/16 in. Overall Length — fits in spaces where a traditional full-size monoblock simply will not. High-Speed Class-D Architecture — compact, efficient power delivery with strong transient control. 10Hz–250Hz Frequency Response — deep low-frequency extension for subwoofer duty. 0–180° Phase Control — helps integrate the subwoofer system with the rest of the vehicle’s audio stage. 4 AWG Power Inputs / 150A Fuse — straightforward current requirements for a compact 1,500-watt build. FULL SPECIFICATIONS RMS Power @ 1Ω (14.4V) 1,500W @ 84% efficiency RMS Power @ 2Ω (14.4V) 1,050W @ 89% efficiency RMS Power @ 4Ω (14.4V) 600W @ 93% efficiency Standard Warranty Load Down to 1Ω when warranty conditions are met Amplifier Class Class-D Channels 1 (Monoblock) Input Sensitivity 0.2V–6V Frequency Response 10Hz–250Hz Phase Control 0–180° THD