“Two glowing hot 12AX7 preamp tubes, running at the proper high voltage, are this pedal’s beating heart”: Friedman unleashes the IR-D, a twin-channel boutique fire-breather inspired by a modded JTM45
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
https://www.musicradar.com/news/friedman-amplification-launches-12ax7-driven-ir-d-preamp-pedal