Boss FV-50L Stereo Volume Effect Pedal for Stompbox Keyboard and Digital Instrument (FV50L FV50) Mixer Stands Battery life will drop to

Battery life will drop to approximately 20 hours (depending on microphone) when phantom powering is engaged (still enough time to get through an average session)

Using an FET Transistor System

your shoulders will never feel tired or painful

Backed by 25 years of engineering experience

Alice Electronic Guitar Plastic Single Machine Head for Acoustic Guitar and Electric Guitar

Boss FV-50L Stereo Volume Effect Pedal for Stompbox Keyboard and Digital Instrument (FV50L FV50) Mixer Stands Battery life will drop toBoss FV 50L Stereo Volume Effect Pedal for Stompbox Keyboard and Digital Instrument (FV50L FV50) Volume Pedal The high impedance FV 50H is designed to be connected before guitar effect units in the signal chain. The low impedance FV 50L is a stereo volume pedal that can be used for a wide variety of purposes including keyboards.