Vox Flat Four Boost


Input impedance: 1M Ω

Output impedance: 2.2k Ω

Vacuum tube: ECC83 / 12AX7

Connections: INPUT jack (guitar input), OUTPUT jack (line output)

Power: AA battery x 6

AC adapter: DC 9V (Option)

Vacuum tube operating voltage: 200 V

Consumption current: 240 mA

Battery Life: Approximately 7 hours

Only 1 left in stock


This vacuum tube booster can be used for a mid-boost, treble-boost, and overdrive, in addition to a full-range boost. Its Baxandall tone circuit allows adjustment from the flat position to the desired boost or cut range. Raising the gain will gradually apply a low-cut, giving you an overdrive sound that’s strongly reminiscent of sought-after vintage tones. An independent mid-boost switch lets you switch the response of the mid-range, which is ideal for playing lead. This is a great unit for blues guitarists who wish to highlight their picking nuances.