The Crazy Tube Circuits Magnifier is a buffer/preamp pedal with clean boost, reviewed by Premier Guitar in September 2026. It offers 20 dB of clean boost and is built around a front-end by Butler Audio, the company behind the BK Butler Tube Driver1. Like other buffer/preamp pedals, it is typically used to reinvigorate a signal sapped of its treble vitality by long cable runs and lots of circuitry1.
What it does
The Magnifier's gain knob is its main control. Premier Guitar's reviewer found sparkling treble crispness with the gain knob around 9 o'clock, and from there on up could drive amps to gritty or sizzling overdrive1. That puts the pedal in the territory of the Klon Centaur's appeal, which the reviewer framed as the ability to massively boost a signal without changing its essential character1.
The reviewer's verdict was short and positive: "Pristine, powerful boost."1
Where it sits in the range
Crazy Tube Circuits makes several other boost-adjacent pedals. The Super Conductor is a four-in-one analog boost, the Vyagra Boost is a boost with EQ and buffer functions, and the XT Unobtanium is a dual-channel overdrive. For more on the category, see the site's pages on boost pedals, buffer pedals and preamp pedals.
Videos
CrazyTubeCircuits
CrazyTubeCircuits
R.J. Ronquillo
Sources (1)
- Quick Hit: Crazy Tube Circuits Magnifier Review, Premier Guitar, 2015-11-20
