TotalDAC driver – A quasi preamp without volume, this machine is meant to insert between a volume-controlled DAC and amplifier to improve the drive current of the connection particularly for converters without built-in output stage. The d-1 driver comes standard with zero voltage gain but can be ordered with 10dB of gain should the DAC to be used have unusually low output voltage. The driver has RCA i/o. For a balanced connection, one uses two mono-strapped units.