EQ / Preamp (Dumble-style 12AX7 tube preamp) · $361.13
The HTJ-Works Valve Crystal 12AX7 Tube Preamp is an analog dumble-style 12AX7 tube preamp pedal, with GAIN; TREBLE; MIDDLE; BASS; MASTER controls, made in Japan. From $361.13.
| Category | EQ / Preamp (Dumble-style 12AX7 tube preamp) |
| Signal | Analog |
| Controls | GAIN; TREBLE; MIDDLE; BASS; MASTER |
| Switches | MID (midrange boost); DEEP; BRIGHT; ON/OFF power switch |
| Footswitches | 0 |
| I/O | mono in / mono out |
| Power | 12V DC (500mA), internally boosted to approx. 250V for the tube |
| Power draw | 500 mA |
| Country of manufacture | Japan |