Teac AI-301DA-SV Pre-Main Amplifier with Bluetooth USB and DAC (Silver) ICEpower 50ASX2-SE Class-D power amp 60W + 60W (4 ohms) high output 2.8MHz/5.6MHz DSD native playback (via USB input) Bluetooth playback with aptX codec High-performance BurrBrown PCM1795 digital-analog converter