This small module plugs straight into the top of a Peavey Classic 30 and instantly adds a master volume to the whole amp ... meaning you can drive the clean channel without excessive volume and also make instant overall volume adjustments of both channels at a gig. This is an entirely passive device which requires no power and no other cables to work ... just plug it into the effects send and return sockets on top of the amp

Shipping is expensive on here because I am now sending via RM International tracked and signed as otherwise Paypal holds my money.
There are alternatives just google