[miceuz] found a nice DIY RIAA preamp project and found a nice little op amp somewhere in his parts bin. After laying out the circuit, [miceuz] etched a few boards and taught his friend how ...

An electronic circuit or stand-alone device that boosts microphone input. A mic preamp is used to adjust the volume of the signal sent to powered speakers or an amplifier. Unlike a phono preamp ...

Even its heater, normally supplied with 6.3 V, takes the lower voltage. The circuit appears at first sight to be a conventional single-ended design, but closer examination reveals a grid bias ...

Inspired by the BK Butler Tube Driver, a favourite of Joe Satriani and Eric Johnson's, Venus has a heap of tone-shaping ...

The circuit has been hand-wired (in the USA) with through-hole components. Priced $250, the Overdrive/Preamp 250 50th Anniversary is true bypass and available now. See DigiTech for more details.

Friedman Amplification, the high-end guitar amp brand favoured by the likes of Jerry Cantrell and Bill Kelliher, has launched the IR-D, a preamp pedal that packs all the modded JTM45 tones of its ...