This is a medium power guitar amplifier is recommended especially for portable amplifier. The amplifier is a combination between a simple integrated audio driver, LM391-80 and a stage of output power ...

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.

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 … ...

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 ...

Emsley points out that he's designed the clean channel with your overdrive pedals in mind and bottom, middle and top controls to tailor your sound without the preamp excessively colouring drive pedals ...