I've had a Soul Inductor in my wah for a couple years now. It sounds amazing! It took my average GCB95 and turned it into a great wah! I've also done the try bypass and removed the input buffer on it too. It seems that the Soul Inductors aren't being made anymore though and that stinks! I contacted the Sabadius company and they said they stopped because they were having too hard of a time sourcing. Let's hope they get some more inductors on the market soon!