386Dual Vacuum Tube Preamp w/Digital Out Two channel tube microphone preamplifierSelectable 96kHz, 88.2kHz, 48kHz, or 44.1kHz sampling rate24, 20, and 16-bit wordlengthsSelectable dither and noise shapingAES/EBU and S/PDIF digital outputsWord clock sync input and outputSeparate analog and digital o..