The IR-D preamp pedal takes those Friedman's high-end amp sounds and puts them in a tube-driven pedal, with dual boosts, onboard IRs, MIDI control and effects loop When you purchase through links on ...

Vacuum tubes have been around for ages, and for better or worse, they have their advocates for use in amplifiers and preamps. However, tubes are simply inconvenient devices. Even a 12AX7 preamp tube ...

This one is a superior class AB push-pull configuration tube amplifier project delivering 80 Watt RMS per channel. Four 6550 high power tetrode vacuum tubes in triode mode and class AB2 push-pull ...