THis is a real "must have" pedal! Based on the "Matsumin Valvecaster" schematicw with many modifications have a clean Booster and a regulated overdrive modes. Many components have been chanched to get a recher tone with a lot of harmonics! Can be used with very good results for microphones or traditional string instruments!
This is a very cool pedal!! It can be used as an a\b switch or as an FX looper giving an one click true by pass to your pedal board! It has 4 jacks. From instrument,to amp,to pedalboard(or amp2) and finally from pedalboard!In the through pedal mode has another "push-on release-off" switch that can return the signal from the output of your pedal board to the input making a feedbacking loop through a pot! You can spend many hours with this trying new sounds that you can create!it is all passive and has no need of battery or power supply unless you want a led indicator on it!