ilovefuzz.com

I thought that these would be a common thing but I just can't seem to find anything that could do both expression and volume. It would be fantastic to have an expression pedal with a little switch on the side to change over to volume.

Am I looking in the wrong places? Do these even exist?

You can do it like the Strymon video and making it switchable would not be very difficult (with in/out and an EXP TRS jack) but the taper will be crap for expression if you just use a volume pedal with the stock pot (since it’s audio taper and most devices are designed for linear EXP control).

You can replace the pot in a volume pedal with a linear one for EXP use, but then it won’t work very well as a volume pedal. Still worth doing since EB VP-Jr feels awesome compared to most expression pedals (I’ve been modding a bunch of these, see HERE)

There’s no way to really have both work well without a custom dual pot.

Roland FV-500H / FV-500L?
http://www.rolandus.com/products/productdetails.php?ProductId=697

Also there is the Behringer foot controller FCV100.

Korg has one coming out later this year.