BM-Q Treble Booster

The Hornby-Skewes Treble Booster was Ritchies favorite box for live and studio recordings like the famous 1971 "Machine Head" or the later 1974 "Burn" session. The HS-S Master in front of a Vox AC30 gives you the unique sound of the well-known rock hymn "Smoke on the water". Compared to its forerunner, the HS-S sounds a tad more aggressive with more mid-range with the guitar’s volume pot fully opened, a little bit similar to a WahWah sound. But the higher the pre-amp volume of the amp is dialed in, the more this midrangy tone will be forced into the background because now the saturation of the amp will generate the necessary harmonics. So it´s up to you to chase the sweet spot of the HS-S unit. You will have to raise the pre-amp volume of a Marshall Major noticeably because this amp is a very clean sounding one. To have some good reserves when dialing in the pre-amp volume Blackmore had his Major amps modded early with a cascaded pre-amp design right from the factory.

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Demo by Leon van der Meer

Demo by Haiko Heinz

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HS-S Treble Booster 

The BSM J-Fuzz stompbox is a faithful recreation of the old original Jennings Fuzz from the late 60's. Tom Jennings was founder and master-mind of the VOX company in the late 50's, accompanied by his friend and technician Dick Denney, who engineered the famous VOX AC30 amp as well as the VOX Defiant transistor amp with a built-in fuzz circuit. Both amps became well-known and famous because of the Beatles, who used those amps.

J Fuzz

The BSM RM model is based on the British Range Master unit produced between 1965 and 1969, as used by Eric Clapton in John Mayall's Bluesbreakers. Eric also used the booster when playing in the legendary group Cream. Its biting, powerful sound is clearly in evidence on the Bluesbreakers "Beano" album. Blues rocker Rory Gallagher, Heavy Rock pioneer Tony Iommi and Brian May from Queen were also heavy users of the orginal Range Master unit. The Range Master unit was also used by G. Tipton & K.K. Downing of the British heavy metal band Judas Priest in the late 1970s years to push its amps in full-tilt heaven. The long yearned for new edition, now issued under the name RM from BSM, includes the same OC44 germanium transistors as the the original 1965 version.

Demo by Benedikt Schlereth

Demo by  Fretboard Playground

Review by guitartest.de

RM Treble Booster 

BSM decided to take the idea of this classic Rock sound and came up with a completely different solution to hit the target. Not interested in making a simple copy of the circuit but developing own ideas to realize the functions with silicon transistors. What you get now is a flexible high gain treblebooster/preamp combination optimized for medium humbucker pickups that works also very well with P90s and singlecoils. It is intended to hit the high treble input of a British Plexi-type amp (or other classic British oriented tube amps) hard. What came out is a real monster, working at 18 volts. But we have to admit that it still works very well with 9 volts, just a little less monstrous. It also comes with a status LED. The preamp stage is a mild treblebooster of low noise followed by a high gain silicon output stage that can easily be symmetrically driven into saturation.

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BM-Q Treble Booster

BSM - Meiser Electronics

HS-S Treble Booster

BSM - Meiser Electronics

J Fuzz

BSM - Meiser Electronics

RM Treble Booster

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