Acorn Amplifiers Transistor MIGFET 50P Preamp.
Based on the preamp of the original MIG-50 ‘Tube Midget’ guitar tube amp.

Features include:
•Exact circuit replication substituting JFETs for preamp tubes in the original amp design
•‘Master’ and ‘Volume’ controls to dial in clean or crunchy drive tones
•True-bypass and built in pedalboard-friend 1590BB-style enclosure