This week, with a little help from a Roomba, [Dino] built a guitar pickup and preamp that sounds marvelous. A pickup takes vibrations from the guitar and turns them into an electrical signal which … ...

Two 1SH24B preamp tubes feed two LM386 amplifier chips, creating a hybrid amplifier. The 1SH24B tubes are designed to work on battery voltage, so a step up circuit wasn’t necessary.

R&M Tone Technology has developed a new line of patented active guitar cables to help players inject some life into their guitar sound. Each PowerWire cable comes with a built-in preamp that ...

For decades, guitarists – even those with little use for the Maestro Echoplex's tape echo – would insist on having an EP-3 in their signal path simply for the loving analogue warmth and organic mojo ...

EarthQuaker Devices has launched an analogue guitar amp simulator that can be used as a preamp on your pedalboard, or as a headphone amplifier for silent practice, and the best part? It’s so simple to ...

Rocktron has announced the ValveSonic Plexi all-tube guitar preamp. Developed with LA Custom, the preamp aims to nail ‘Plexi’ tones spanning the ’60s to the ’80s and beyond. A bright control offers ...

Years ago, intrigued by the hype around NOS tubes and the promise that they could magically transform my amps into tonal bliss, I invested in a stash of pricey NOS 12AX7 preamp tubes just to see what ...