Elite Integrated Amp Brings Your Music to Life, 140 W/Ch at 4 ?, 20 Hz–20 kHz, 0.05%, 2 Channels Driven, IEC, AWRAT (Advanced Wide Range Amplifier Technology), DIDRC (Dynamic Intermodulation Distortion Reduction Circuitry), Separate Anti-Vibration Aluminum Panels for Top, Front, and Sides, New Circuit Board Construction to Reduce Vibration, Symmetrical Layout of L/R Channels, Quad Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry, 192 kHz/24-Bit HD Audio Playback via USB (Asynchronous Transfer), Separate Wolfson® 192 kHz/24-Bit DACs (WM8742 x 2) for L/R Channels, Four Large 18,000 µF Capacitors, Four Amplifier Modes (Integrated Amp, Power Amp, Pre-Amp, Split Pre-Amp/Power Amp), 4 Digital Inputs (1 Amphenol AES/EBU, 1 Optical, and 2 Coaxial), black