SMSL SA-160 is based on ST Microelectronics TDA7498E chip core ,adopt NICHICON•EPCOS•ELNA•ALPS•ST•JRC•AV•TDK refined accessories Carry EPCOS、AV capacitance as filter output to be a high quality digital amplifier. Technical Specifications: Speaker output power : 160 W / 4ohm Headphone Output power : 130m W / 32ohm Input level : 400mv - 2V Case material: Aluminum Chassis technology: pull pattern, coloring , CNC machining ( will not fade like paint ) Screen technology: laser engraving ( not fade like paint ) Input Interface : RCA jack ( gold-plated ) stereo input Power supply :100-240ACV Circuit Plate : 1.6mm full fiberglass , 2OZ ( oz. ) copper thickness , the most advanced immersion gold processing Machine size : 1689836mm ( excluding protruding parts ) Weight : 1.5KG with packing ( actual shipment weight plus packaging weight by date)