As a follow-up of the short-lived germanium-transistor loaded early issued Hornby-Skewes Treble Booster, now the 1967 version, equipped with a silicon transistor, appears on the scene under the BSM brand HS-S. With additional volume control like Blackmore´s modified unit as HS-S Master available.

Demo by Brett Kingman

Demo by Haiko Heinz

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HS-S Master Treble Booster

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 

Based on the best classic boosters, the BSM Ambassador - a germanium treble/midrange booster, is a crossover between the Rangemaster Booster, the Orange Booster and the Winston Booster. The transistors are specially selected to pass the strict internal BSM factory QC guidelines. Classic boosters never cared about the midrange, and that's what makes the Ambassador stand out - the midrange and the treble range are both inside this little box. From crystal clear highs to fat and meaty mids, it's easy to dial in all these sounds with every common pickup. With the "color" control set to midrange, a singlecoil pickup really sounds like a PAF humbucker, and a PAF like fat and overwounded humbucker. The Ambassador is loaded with a special selected original NOS germanium transistor from the 60's, like the Winston Treble Booster was.

Ambassador Treble/Mid Booster 

The RPA Major is the answer to many customer calls, demanding the hard, agressive Ritchie Blackmore stage sound of the 70's, without the need to get their amp heavily modified. The RPA Major offers a lot more gain compared to the stock RPA model with tons of crunch and a higher level of agressivity ... something that fits the modern Metal scene as well. With the level control turned up to the max, the RPA Major delivers an output level of 8 volts (!!!), which can kill most modulation stompboxes with electronical CMOS switching like delay, chorus etc. that are connected after the RPA Major in the signal chain. So please only use the RPA Major with full level directly into your tube amp. If you want to connect some stompboxes after the RPA Major, reduce the level to 50% to be on the safe side.

Demo by  Joe Stump

Demo by  More Karvonen

RPA Major special Booster

The BSM RMG model is based on the british Vox Treble & Bass booster made in the late 60's, used by many british bands at this time. Here is a custom version of this Vox unit as a homage to the famous BYRDS guitarist Roger McGuinn and his signature "jingle jangle" sound. The RMG´s customized tone network, makes it the perfect treble booster for all clean sounds. The RMG model includes a tone control, that allows an extraordinary amount of versatility. It can add a lot of twang and spank to any guitar sound. By pronouncing the percussive attack in a very musical way, any guitar will sound more "in the face" that way.

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RMG Treble Booster Jingle Jangle Machine

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Weitere Pedals von BSM - Meiser Electronics

BSM - Meiser Electronics

HS-S Master Treble Booster

BSM - Meiser Electronics

RM Treble Booster

BSM - Meiser Electronics

Ambassador Treble/Mid Booster

BSM - Meiser Electronics

RPA Major special Booster

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