Studio & Live '75 Special Booster

Der '75 bietet die Wahl zwischen Live- und  Studiosound von Blackmore bei Rainbow im Jahr 1975, ausgehend von einem handelsüblichen Röhren-Amp und nicht dem Hot-Rod Marshall, den Blackmore damals einsetzte.


Der Grundcharakter ist als frisch zu bezeichnen mit etwas Crunch, die Bässe werden entmatscht.

Schaltet man den Top-Boost Schalter nach unten, erhält man den puren Sound der Eingangsstufe des AIWA Tonbands (die bei Marshall allerdings Instrumenten-kompatibel gemacht worden war, es handelte sich ja zunächst um einen linearen HiFi- Eingang).

Nach oben schaltet man um auf einen Studio Sound mit einer Höhenkorrektur, die etwas heller und transparenter klingt.

Der Level-Regler kann auf Nullstellung den typisch cleanen Live Sound von Blackmore 1975 liefern, oder mit dem Reindrehen mehr Crunch produzieren.


Blackmore favorisierte die AIWA Maschine aufgrund ihrer herausragenden Klangqualität gegenüber dem z. B. von Jimmy Page verwendeten Echoplex, das ein Tool für Musiker war und keine HiFi-Maschine.

Ein Bestseller bei BSM.

Mittelstarker Boost-Effekt.


Verarbeitet werden ausschließlich strengst selektierte Gernanium und Silizium Transistoren aus alten Original-Beständen NOS!



Preis: € 227,13 inkl. 16%  MwSt. Versandkostenfrei innerhalb Deutschlands



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.

The story goes that Blackmore recorded the first songs on the road using different studios and without his personalized Marshall Major amps; just his guitar and the AIWA reel-to-reel with the studio’s own Marshall amps. Ritchie used Purple’s support act “Elf” (with Dio) as backing band and kept the recordings secretly away from his employing band.

Nowadays it would definitely be a good idea to have either a built in master-volume amp wise or an external power-soak behind to modify the resulting heavy volume. If you want to achieve the sound as closely as possible, use the “historical correct” pickups from the ’68-’74 era or the new substitutes on a maple neck ash-body Strat. The booster has been designed especially having these details in mind. Enough for theory! As it turned out in the end the “Studio & live ‘75” would fulfil all this, but even more. If you have found your personal settings (out of endless possible combinations) and have the right attitude, you can use it for all classic Blackmore sounds from the late 60 ́s until nowadays if you use a matching amp behind it.

The basic sound can be described as crisp but there’s always an attractive little dirty noticeable break-up, even in the clean position.

At the left there’s a 2-position mini lever switch for “top boost”. In the down position you’ll get nearly the pure and very massive AIWA preamp sound. The upper position emulates a tad of Martin Birches studio filtering, which is mainly a high pass function. You will have the most flexibility using either the booster’s high-pass or maybe the pure AIWA sound with the high-pass function built inside your amp (like in Ritchie’s Majors) or even without any high-pass, resulting in a very, very huge fullrange AIWA sound!

On the right there’s a gain pot that enables you to dial in every possible gain stage from nearly clean Ritchie’s typical 1975/76 stage level up to crunchy gain. The overall sound is juicy, dynamic and pearly brilliant if you use mainly the bright input of your amp. Of course you can experiment with normal inputs as well. A good amp setting to start with would be Bass # 2, Mid nearly full, Treble #5, Presence #0 and Volume #8.

The magical tone of the “Studio and Live ‘75” Booster is achieved by the interaction between guitar pickup, booster and amplifier. The Booster should be connected in the signal path directly behind the guitar. The “Studio ‘75” is powered by a 9V battery or external 9V power supply with a current consumption of approximately 300uA. The average output level is 7 dBm, the maximum output voltage is 5V, when the strings are struck really hard.

Note: The negative pole of the battery is ground. All BSM Boosters work true bypass when switched off.

Marshall, Marshall Major, AIWA and Strat are registered trademarks, which BSM is not affiliated with!