The Boss FV50H Volume Pedal meets the needs of the most demanding users. Use it for a variety of purposes. It's a high-impedance volume pedal that connects directly before the guitar effects in the signal chain. Its 2-in/2-out design allows you to control stereo keyboards and stereo effect units.
Couldn't wait to get this pedal so I would have more personal control of the volume when playing my mandolin on stage. It works as advertised and I am very pleased with the purchase. I just have to get into the habit of using it!! I would definitely recommend this product to anyone needing a volume control pedal.
I own a couple Ernie Ball VP Jr volume pedals, and while these pedals are superior to the Boss FV50 in terms of build quality and feel, they're heavy. I'm putting together a small pedalboard for bus and train travel and so weight is my primary concern. I picked up the FV50H for use with guitar as well as the EV-5 expression pedal. So far they're working out great.