Most audio tube amps we see use common tubes – usually a 12AX7 for the preamp and one of the more common power tubes such as an EL34.[Daniel], on the other hand, decided to build his own audio tube ...

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 ...

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 ...