I recently purchased a Crybaby 535Q Wah Pedal. I am playing through a Vox AD30VT. No matter what I try, it does not sound right. It sounds more like a squeel with volume. The Vox amp has amp models and effects built in. Unfortunately, there is no real "Clean" channel, i am only able to select one of the models, and bypass the effects.

Please help me figure out what to do. I have read that because of the built in model, it wont sound right on that amp. Is this true? I have 1 week to bring it back to the store. The order I have it in my "chain" is just Guitar--Wah--Amp.

Thanks in advance.