Titan Boost/Ocrave – John Hollis

John Hollis Titan boost/octave. This is an op amp input pre amp/booster into a transformer. The transformer is 1k/20k and can output 30v from a 9v battery. The switch inserts a diode bridge for an octave effect. The sound of the boost warm and clear. The octave effect is pretty good and different from other … Read more