JOYO R-30 Classic Bass Tone of "90s Bass Guitar Preamp Pedal 3 Band EQ DI Function

In order to make JOYO pedals work properly, avoiding unexpected noise caused by power supply, we recommend that you purchase a JOYO original power adapter, or choose other reliable brands. With BASS/MIDDLE/TREBLE Control, and middle shift toggle switch (selects the frequency between 500HZ-1000HZ), BASS shift toggle switch (selects the frequency between 40hz-80hz). Supports DI Function, can output to the mixer directly.