Guitar/Bass booster from Bsm
From 1971 upwards, Ritchie Blackmore used not only the mid-rangy sounding Hornby-Skewes treblebooster, he also used the highly dynamical and brilliant sounding CM booster, built and designed by Bill …
![[Musikmesse] BSM "71/73" Treble Booster](https://img.audiofanzine.com/img/product/normal/1/0/106587.jpg?fm=pjpg&w=334&h=243&fit=contain&s=2dc63b8babce96a3c167920a6f6185a8)