Ultra Fi DAC-41 Non Oversampling USB only DAC. Excellent condition with no blemishes. This is basically the latest and improved/upgraded version of the dB Audio Labs Tranquility SE DAC. It is USB input only and an outstanding DAC, especially at the asking price. Outstanding NOS DAC that just sounds "right" to me. Only selling to move to a dac with a volume control. Local pickup is welcome. Paypal adds 3%. Comes with owners manual only. No power cord included (they don't come with one from the manufacturer.