Audioengine - D1 / Premium Headphone Amplifier /24-Bit DAC - digital analogue converter

Audio Resolution: Supports audio up to 24-bit / 192 kHz (native up to 24-bit/96 kHz via USB and up to 192 kHz via optical input). Chipset: Uses the AKM4396 DAC chip and a low-noise Texas Instruments operational amplifier (such as the NE532 or TI OPA2134 in the dedicated sections). Connectivity: USB input (standard USB, bus-powered). TOSLINK optical input. Stereo RCA analog output on the rear panel. 3.5 mm headphone output on the front panel (which automatically mutes the RCA outputs when plugged in).