PROVIDENCE VZW-1 VITALIZER WV bufferThe Vitalizer is one of the buffers that converts high impedance signal that are more likely to degrade the sound quality by picking up noise or losing higher frequency sound while going through the wiring and electric circuits to low impedance signal that are less likely to be affected by those problems. The wah and volume pedal tend to degrade the signal and color the tone when high impedance signal is received. The Vitalizer is more effective to be