The VT-I/F is a dual-channel, all-triode vacuum tube DI (?direct box?) for recording electric or electronic instruments. The inputs are designed to provide the proper load impedance for all instruments that have a 1/4-inch phone jack output. Tube circuitry provides the very high impedance necessary to capture all the details of these instruments.
The outputs of the VT-I/F are mic level (150 ohm source impedance at a nominal -30dBV). The VT-I/F is designed to operate into a high-quality microphone preamplifier like our VT-1 and VT-2 Vacuum Tube Microphone Preamplifiers
The operation is very simple: plug the instrument into the 1/4? front panel jack and take the output either from the front panel XLR connector, or a parallel XLR connector on the back panel. A second 1/4? jack provides an output to feed a guitar amplifier when necessary. A ground-lift switch helps eliminate ground loop buzz.
The two channels are entirely independent and can be used with two different instruments at the same time.