Tangent Ampster BT II Features: 2 x 50 watts output Bluetooth 5.0 aptx HD (from 2022) Digital and analog in Aux in Stylish Remote Wake on bluetooth & AUX Memory Volume Optional external IR (included) Specifications: Input Bluetooth, 3.5 mm AUX (Mini Jack), Analog RCA, Optical Digital In Output Subwoofer Out, USB Charge, Speaker terminals (stereo) Frequency 20 - 20000 Hz Impedance 4 Ω Remote Control Yes Power 2 x 50 Watt Standby <1W (EUP 2013) Power 220 Vac ~ 50/60 Hz (EU), Internal Weight 1.72 / 2.20 kg Product Dimensions 195 x 194 x 70 mm Carton Size 330 x 260 x 120 mm DAC AK4388 192kHz 24-Bit 2ch