BM-Q Treble Booster

The BSM RM 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, Glam rocker Mark Bolan, Heavy Rock pioneer Tony Iommi and Brian May from Queen were also heavy users of the original Range Master unit.

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RM early days Treble Booster

The BSM Velvet 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, Glam rocker Mark Bolan, Heavy Rock pioneer Tony Iommi and Brian May from Queen were also heavy users of the original Range Master unit.

Demo by Mezozr

Demo by  魔法の箱研究所 - Stompbox Review Channel -

RM Velvet Treble 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

BSM designed a new private stock booster just for the favorite taste of the company‘s mastermind. It was intended in first place to emulate the sound of the 1975 studio recording “Ritchie Blackmore’s Rainbow”, second to achieve Ritchie’s early Rainbow live sound that can be heard on the Nov. ’75 bootlegs, e.g. Bacon Theatre, NYC. Furthermore the unit was designed to get this sound from any stock “Bright” input found on classic Marshall amps.

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Studio 75 special Booster

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Weitere Pedals von BSM - Meiser Electronics

BSM - Meiser Electronics

BM-Q Treble Booster

BSM - Meiser Electronics

RM early days Treble Booster

BSM - Meiser Electronics

RM Velvet Treble Booster

BSM - Meiser Electronics

RPA Major special Booster

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