What It Is:Yamaha Integrated AmplifiersWhat It Does:A-S501 Integrated AmplifierImpressive high quality sound with a wide range of features and an elegant appearance. An integrated amplifier with the advantage of digital inputs.Features85 W x 2-ch (20 Hz - 20 kHz)Digital audio inputs for Tv and Blu-ray Disc playerPure Direct Mode for Greater Sound PurityToP-art (Total Purity Audio Reproduction Technology) and high quality partsI/O (input to output) direct symmetrical designART (Anti-Resonance and Tough) BaseCustom-made power transformer / 12000uF block capacitors / extruded aluminum heat sinksGold-plated speaker terminals and Rca terminalsSimple yet sophisticated design (aluminum front panel and knobs)Continuously variable loudness control