The XM-GTX1852 amplifier afford incredible installation flexibility and packs quite a punch. GTX amplifiers offer tremendous value including convenience features such as: modern cosmetics, variable cross-overs, multiple channel configurations and singe-side electrical connections to suit almost any application. Rated Power at 4 Ohm Stereo 185W x 2 RMS (20Hz-20kHz, 1%THD+N, at 4 Ohm, 14.4V)1 Maximum Power 4 Ohm Stereo Maximum power output of 380W per channel at 4 Ohm. Rated Power at 2 Ohm Stereo 200W x 2 RMS (20Hz-20kHz, 1%THD+N, at 2 Ohm, 14.4V) Maximum Power 2 Ohm Stereo Maximum power output of 500W per channel at 2 Ohm. Rated Power at 4 Ohm Mono 400W x 1 RMS (20Hz-20kHz, 1%THD+N, at 4 Ohm mono, 14.4V) Maximum Power 4 Ohm Mono This unit can be used as a bridging amplifier with a maximum output of 1000W at 4 Ohms. High Level Input Direct connection (High Level Input) can be made with the speaker output of your car audio unit if it is not equipped with RCA line output. Hi-Level Sensing power On feature allows the unit to be activated without need for remote connection. Internal Crossover Built in selectable 18 dB/Oct 80Hz LPF. Specifications Amplifier Section Max power output 1000W max poer Power Ad Hoc 185W per channel at 4 Ohms from 20Hz-20kHz with 1% THD1 Speaker Impedance 2-8 Ohm stereo 4-8 Ohms mono Audio Band Low Pass Filter: 80 HZ, -18dB/oct Circuit System "OTL Output Transformerless Circuit Pulse Power Supply" Frequency Response 5-50kHz (+0/-3 dB) Harmonic Distortion 0.05% or less (at 1 kHz, 4 ohm) Impedance 2-8 Ohms Stereo, 4-8 Ohms Mono Input Level 0.3 - 6.0V (RCA input) 1.2 - 12.0V (High Level Input) Noise Level 93 dBA Power Supply OTL Output Transformerless Circuit Pulse Power Supply Audio Features Level Control High Level Input: 1.2 - 12V XM-GTX1852 2/1 Channel GTX Series Amplifier