Boost (Tube Booster) · $210
The VOX Tone Garage Flat 4 Boost is an analog tube Booster pedal based on the Hi-Volt tube boost (12AX7, passive Baxandall EQ), with Gain, Low, High controls, made in Japan. From $210.
| Category | Boost (Tube Booster) |
| Circuit / based on | Hi-Volt tube boost (12AX7, passive Baxandall EQ) |
| Signal | Analog |
| Controls | Gain, Low, High |
| Switches | Mid-Boost switch; Standby/On (valve warm-up) switch |
| Footswitches | 1 |
| Bypass | true bypass (miniature relay) |
| True bypass | Yes |
| I/O | Input, Output (1/4"); DC 9V input jack |
| Power | 9V DC (optional adapter) or 6x AA batteries |
| Power draw | 240 mA |
| Battery power | Yes |
| Enclosure | Die-cast metal with hooded knob cover |
| Dimensions | 87 x 132 x 63 mm (3.43 x 5.2 x 2.48 in) |
| Weight | 420 g (14.81 oz) |
| Country of manufacture | Japan |