Concerning the Idiotbox Blower Box, I will say this. I have used it with a very hot P bass (DiMarzio Will Power Middles) and it does great, however my Ibanez SRX3EX, SR500, CTB5, and hordes of other active basses are just too much for it. Unless you have an extremely light touch, it just can't handle it. MXR Bass Distortion has the same problem, the boxes really favor a lower-gain output if you want to play with any dynamics. That being said, I swear by the Blower Box and absolutely love it...with my passives.