the 2nd Offering in "Treble Booster April" - the Rangemaster. I used the AC128 transistor in mine primarily because I didn't have any OC44s left I also added a 1N4001 diode to protect the circuit against reverse polarity - no, it doesn't change how it sounds and yes, you can leave it out if you don't believe me.
I know the 5nF transistor can be difficult to find so in the actual layout I put 4.7nF capacitor but given the nature of capacitor tolerances a 5nF rated capacitor would probably measure that far out anyway.
anyway - this is a lovely treble booster and I even used it in the song posted below so you can hear it in action.
