12AU7 Preamp - Tube Pedal
The 12AU7 PREAMP is specifically designed for acoustic guitars, especially those with piezo pickups, with the goal of making the signal sound like an actual guitar. Let the audience hear what you hear! No more phony brightness, but rather a much more natural presentation with enough tone control range to dial in your desired sound.
A JFET input stage offers up very high input impedance for improved bottom end when connected to piezo directly. The XLR output (for PA) is galvanically isolated to minimize hum and buzz while on stage (ground lift button on side). Let vacuum tube magic warm up your sound! This always-on pedal works great for synth and bass too.
I was inspired to design this pedal to help local artists (Kimokeo, Peterson, Na Leo, Kapono) achieve a more life-like sound in concert.
Specifications
- 1 x 12AU7, all analog circuit
- 5MOhm input impedance
- 15dB maximum gain
- 2.5% distortion @500mV
- 50Hz to 20kHz bandwidth
- 140mA current draw
- 4.7" x 3.7" x 2.1"
Downloads
Videos
Testimonials
- "The tone was exactly the same as my J45 sound when played acoustically. The levels per frequency was even and gave a much warmer and fuller sound through the sound system. Very easy to make adjustments but very minimally needed because the 12 ʻoclock setting suggestions seemed to be spot on...just with some minor adjustments."