JL AUDIO (VX400/4I) 4-CHANNEL CLASS D FULL-RANGE AMPLIFIER WITH INTEGRATED DSP, 100 WATTS X 4 @ 2 OHM / 75W X 4 @ 4 OHM - 14.4V OVERVIEW: 4-Channel Class D Full-Range Amplifier with Integrated DSP, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V Designed to simplify great audio, every VXi amplifier combines our advanced NexD2™ switching amplifier technology with an integrated, full-featured digital signal processor. With our second-generation NexD2™ technology, the VX400/4i full-range amplifier outputs up to 75 watts per channel into 4 ohms, or 100 watts into 2 ohms. It can also be bridged into 4 ohms, producing up to 200 W x 2. The NexD2™ full-range technology in this amplifier is DSP-controlled and features a reduced loop area design utilizing DirectFET™ outputs for outstanding fidelity, very low noise and exceptional efficiency. The amplifier chassis is ultra-compact, with all connections on one side, to greatly simplify installation into tight spaces. Instead of traditional control knobs and switches, all amplifier adjustments and DSP functionality are configured via a compatible external device (PC, Tablet or Smartphone), with the appropriate JL Audio TüN® Software application installed. Amplifier includes: Power Connector (for 4 AWG wire), Analog Input/Pre-Out Harness, Speaker Output Harness, 6 ft A/B USB Cable RATED CONTINUOUS (RMS) POWER @ 14.4 V @ 4 Ω : 75 W RMS x 4 @ 2 Ω : 100 W RMS x 4 Bridged @ 4Ω : 200 W RMS x 2 RATED CONTINUOUS (RMS) POWER @ 12.5 V @ 4 Ω : 60 W RMS x 4 @ 2 Ω : 90 W RMS x 4 Bridged @ 4Ω : 180 W RMS x 2 GENERAL SPECIFICATIONS: Frequency Response : 12 Hz - 24 kHz (+0, -1dB)) S/N Ratio, referred to highest rated power (Analog Inputs) : 99 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W (Analog Inputs) : 80 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to highest rated power (Digital Inputs) : 101 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W (Digital Inputs) : 81 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω : >100 / 50 Hz Damping Factor @ 2 Ω : >50 / 50 Hz THD+N @ Rated Power :