The USBDualTubePre from ART is a compact, dual channel tube preamp suitable for use in any basic recording system. It functions standalone as a tube-based microphone preamp, or as the front end for a DAW via either USB, or using the S/PDIF output (the latter delivers a higher bit rate).
Each input of the unit has independent input gain control and output level, phase inversion, low frequency roll-off, 48V phantom power and an opto-compressor circuit that can be bypassed if required. Monitoring is available via a stereo mini headphone jack with level and monitor mix controls.
The mix controls allow latency free monitoring of the inputs while recording, as well as playback monitoring of audio mix via the USB bus. The monitor mix is also routed to the 1/4" balanced outputs, with separate level control for control room monitor source.
The interface is fully USB compliant with no special drivers needed. It functions under both Mac OS X and multiple versions of Windows operating systems.