[Marcel]’s low-voltage tube amp design might spark your interest. The design operates with a B+ (plate) voltage of only 40v, making it less intimidating and dangerous than many other amps that ...

The legendary designer is famed for founding Matchless and his early Bad Cat builds –now he’s returned to the boutique firm ...

The design is inspired by the guitar amps of ... The circuit is a pretty conventional single-ended one with a two stage double triode preamp and a single power output tube. The transformers ...

Credit: Crazy Tube Circuits Crazy Tube Circuits has unveiled the Heatseeker, an amp-in-a-box pedal that ... This is a classic CTC-style design. The brand specialises in high-functioning twofers ...

not least from the workshops of Athens-based pedal maker Crazy Tube Circuits, whose whole design philosophy grew out of a love for vintage and classic valve amps. Despite this emphasis on ...

Part 5 provides spec summary of the GP/R K2-W vacuum-tube op amp and discusses measurement constraints/conditions and LTspice modeled output. The K2-W vacuum-tube op ...