Most Treble Boosters are based on the Rangemaster. I think the one in GR is basically Brian May's Cornish modded Dallas Rangemaster. Closest available is probably the May endorsed
Greg Fryer Ringmaster.
Some others from
Gilmourish:
AnalogMan Beano Boost
- Same basic circuit as the Rangemaster but this one uses a NKT275 transistor for a warmer and more quiet tone.
Robert Keeley Java Boost
- This one’s got the legendary Mullard OC44 germanium transistor. The pedal is perhaps closer to a treble and bass booster with the tone knob for a wider EQ frequency.
BYOC Tribooster
- 3 in one, – classic Rangemaster germanium boost, silicon boost as the Brian May booster and Mosfet for clean volume boost.
MI Audio Boost n Buff
- This is one of the most versatile treble booster I’ve tried. Incredibly tasty with a fat character. The Boost n Buff also uses buffers for compensating tone loss.
BBE Freq Boost
- Surprisingly cool sounding budget model.
