Treble booster resources
Rangemaster & Brain May treblebooster
- Electrosmash - Dallas Rangemaster documentation
- Fryer Guitars - History of the Brain May Treble boosters
- Fryer Guitars - Grand Poohbah Treble Booster
- Small bear electronics - Breadboarding a Rangemaster
- Blackstufflabs - Information about the Brian May treble boosters and PCB. The pdf gives a lot of information!
- Mark Hennessy - Vintage transistors
- Pete Cornish - the Queen years
- Range master plus, good example and circuit of both a Ge en a Si treble booster in one package
- Guild Brian May Treble Boosters
Low current tube booster
- Banana booster - a tube booster
- Valve wizard - Triodes at low voltage
- LT Spice model for 12AX7 low voltage