Hi folks, I am in the midst of putting my pedal board together - mostly Duesenberg drives. However, I have noticed that some of the older pedals often used with Gretsch guitars do not have by-pass circuitry. Can anyone give me the heads up as to whether the following 3 pedals has by-pass circuitry: 1. Ibanez Tube Screamer Ltd Ed TS9 2. Vox Ice 9 Satriani overdrive 3. MXR EVH 5150 Chorus I have been offered the above 3 as a group of pedals and my research so far has not found whether or not they do have by-pass - it would be a deal breaker for me. If I get all 3 and only one does not have a by-pass, I coud sell that separately. I have heard good news about all 3 pedals and want the flexbility to switch them off or on without affecting switching on or off the whole board.