ICEpower 50ASX2-SE Class-D power amp 60W + 60W (4 ohms) high output 2.8MHz/5.6MHz DSD native playback (via USB input) 32bit/192kHz PCM file playback Asynchronous mode capability BurrBrown PCM1795 digital-to-analog converter Bluetooth playback with aptX codec Memory capacity for up to a maximum of eight Bluetooth device pairings CCLC headphone output circuit Full metal housing One USB input (USB-B type) One coaxial digital input One optical digital input Two RCA stereo line inputs Screw-type speaker terminals (banana plugs, AWG8 guage cable compatible) Headphone output (standard stereo jack) Subwoofer output (RCA) Aluminum motor-driven volume control Three-pin IEC AC power socket Customized remote control included Auto Power On function (activated by digital signal sensing) Auto Power Save function