The Rolls DB325 Instrument FET Preamp DI is an instrument active direct box. It is designed to take a guitar, bass or keyboard and plug it directly into a computer, laptop or tablet. It can also be used to boost the signal of an instrument to be plugged in to just about anything. It works well with piezo pickups typically found in acoustic instruments. It will also work to add more gain to you guitar tube amp.
Mono 1/4" input with level control.
3.5mm (Stereo) and 1/4" (MONO) outputs.
XLR Balanced output.