VOX TG1-FL4BT (Clearance) Flat 4 Boost

VOX TG1-FL4BT Flat 4 Boost – Tube-Driven Full-Range & Mid/ Treble Booster Pedal

Unlock a new level of tonal control and responsiveness with the VOX TG1-FL4BT Flat 4 Boost. Crafted as part of VOX’s Tone Garage series, this pedal is more than a simple booster — it’s a true vacuum-tube powered tone shaping tool that gives you full-range boost, treble or mid-boost modes, and even a subtle overdrive character.

At its core lies VOX’s proprietary “Hi-Volt” technology: although compact, this pedal fires a 12AX7/ECC83 vacuum tube at approximately 200 V, delivering tone, feel and harmonic richness reminiscent of full tube amps — all from a stompbox. The discrete analog circuitry, true bypass switching, and die-cast aluminum chassis speak to premium build quality and professional readiness.

What’s unique about the Flat 4 Boost is its highly flexible tone-shaping section. A passive Baxandall-style EQ with LOW and HIGH controls allows you to go from a “flat” response to subtle or aggressive boosts/cuts of frequency bands. As you raise the GAIN control beyond 12 o’clock, the pedal introduces a gradual low-end roll-off — effectively adding vintage overdrive flavour without losing clarity. An independent MID-BOOST switch gives you an extra frequency layer perfect when you need lead-cutting punch.

Whether you’re running clean into a valve amp and just need a little lift, driving your front end into crunch, or exploring vintage-inspired tones with bite and clarity, the Flat 4 Boost offers a versatile platform. The tactile response — from guitar volume knob, pick attack, and circuit dynamics — sets it apart from standard solid-state boosters. In short: it helps you shape your tone, not just turn up the volume.

Key Specifications

• Input impedance: 1 M Ω
• Output impedance: 2.2 k Ω
• Vacuum tube: ECC83 / 12AX7 
• Tube operating voltage: ~200 V 
• Power: 6 × AA batteries (alkaline) OR DC 9 V adapter (optional)
• Current consumption: ~240 mA
• Approximate battery life: ~7 hours (when using AA batteries)
• Dimensions (W × D × H): 87 × 132 × 63 mm / 3.43 × 5.20 × 2.48 inches
• Weight: ~420 g (14.81 oz) without batteries
• Additional features: Passive Baxandall EQ (LOW & HIGH controls), GAIN control that changes character, independent MID-BOOST switch, true bypass, die-cast body.

Uses & Applications

• Clean-boosting backing tracks : Use it to raise your signal level without sacrificing tonal integrity — perfect for solos or pushing your amp harder.
• Mid-range lead shaping : The MID-BOOST switch gives you a focused lead voice, cutting through the mix when you need bite.
• Treble enhancement : If your guitar or amp sounds a little dull, adjust the HIGH control and LOW to taste, and raise GAIN for more edge.
• Vintage overdrive flavour : Thanks to the low-cut roll-off behaviour at higher GAIN settings, you can use this as an overdrive or “dirty boost” with tube-amp feel.
• Pedalboard integration : Use it before your amp or in the effects loop as a signal shaper; even as a tactile volume/gain controller for your rig.
• Studio & session use : The clarity, touch sensitivity and EQ control make it ideal for recording contexts where you want true tube feel without hauling a full amp head.

Why Choose the VOX Flat 4 Boost?

• Authentic tube feel in a pedal : The Hi-Volt 12AX7 circuit brings tube amp dynamics to your pedal chain — not just another solid-state booster.
• Highly flexible tone control : Unlike many boosters that only raise volume, this pedal lets you sculpt frequency response (LOW/HIGH), boost mids, treble or full-range, or even go into mild overdrive.
• Premium analog design : The pedal uses discrete circuits (no generic IC chips) and true bypass — preserving your tone when off and delivering rich harmonic response when on.
• Designed for serious players : The rugged build, thoughtful controls and tonal versatility make this suitable for live gigs, sessions or serious home rigs.
• Multi-role tool : Whether you’re a rhythm guitarist needing clarity, a soloist wanting cut, or a tone-conscious player looking for character — this one pedal addresses all.
• Classic brand & heritage : VOX is a name well established in guitar tone history. Owning this Flat 4 Boost ties into that legacy.

Don’t settle for generic volume‐up boosters when you can upgrade to the VOX Flat 4 Boost. Experience true tube-driven warmth, dynamic response and premium tone shaping — all in a pedal that fits into your rig. Whether you’re stepping up your live show, recording with precision, or shaping your signature sound at home, this is the tool to do it.

Act now: Add the VOX TG1-FL4BT Flat 4 Boost to your rig, dial in your tone, and unleash your sound with clarity, punch and character. Your guitar deserves it.