Vox VTB-1 Treble Booster

Classic British bite. Modern VOX engineering. 

Few guitar sounds are as unmistakable as a VOX AC30 pushed into its sweet spot by a vintage British Treble Booster. Heard on recordings by icons like Rory Gallagher, Brian May, and Marc Bolan, this pairing helped define the sound of rock’s formative years. The VTB-1 revives that legacy with a re-engineered, road-ready booster that delivers the expressive character of the original without the limitations of 1960s Germanium technology. 

Vintage character, modern stability 

Classic Treble Boosters relied on Germanium transistors, revered for their rich nonlinear response but notorious for temperature sensitivity, inconsistent performance, and noise. Simply swapping in Silicon typically loses the magic. So, the VOX engineering team set out to solve the puzzle: How do you preserve everything players love about Germanium while achieving the stability of Silicon? 

After detailed analysis of multiple original units and months spent modelling their behavior, VOX developed a new approach that captures the wide, nuanced nonlinear region of a great Germanium transistor using a single, carefully biased Silicon device. By widening the edge-of-breakup zone and tuning the operating point with pinpoint accuracy, the VTB-1 achieves the smooth onset of drive, singing overtones, and exceptional volume-knob cleanup that defines classic Treble Booster tone. 

At the heart of the VTB-1 is a hand-selected Silver Can BC108 transistor, chosen for its consistent performance, low noise, and authentic vintage feel. Modern thin-film resistors further reduce noise beyond what carbon-composition parts of the 60s could achieve. 

Key Features 

Faithfully recreated vintage Treble Booster voice, tuned to make VOX amps sing 

Unique Silicon design that authentically emulates Germanium’s nonlinear behavior 

Single-transistor gain stage for traditional clarity and touch response 

Precisely targeted biasing for an expanded sweet spot and exceptional volume-knob cleanup 

Hand-selected Silver Can BC108 transistor 

Fat Switch to expand the boosted frequency range 

Exceptionally low-noise performance 

Compact, rugged, vintage-style enclosure 

Compatible with modern pedalboard power supplies and flexible placement in your signal chain 

The sound and feel of the originals 

The VTB-1 preserves the simplicity of the classic single-transistor design while offering a significantly more predictable and stable playing experience. The custom bias circuit positions the BC108 in its ideal operating zone, allowing players to sit comfortably in that expressive edge-of-breakup range. 

Dial back your guitar’s volume for sparkling, chimey cleans—a hallmark of the best original boosters—or turn the Boost control clockwise to push your amp into a harmonically rich overdrive with massive headroom and focused presence. 

Authenticity meets flexibility 

By combining a period-correct voice with modern refinements, the VTB-1 offers an authentic ’60s Treble Booster experience with greatly expanded versatility. The Fat Switch broadens the frequency boost, letting you tailor the pedal to your guitar and playing style, from crisp vintage attack to thicker, more modern punch. And thanks to careful engineering, the VTB-1 remains remarkably quiet, even at high gain settings. 

The perfect partner for VOX amplifiers 

Paired with a VOX AC30 or AC15, the VTB-1 unlocks the singing, harmonically rich overdrive that shaped the golden age of British rock. Dynamic, touch-sensitive, and beautifully interactive, it captures the soul of the original boosters while offering the reliability today’s players need. 

Iconic tone within reach 

Classic Treble Boosters have long been rare, expensive, and unpredictable. The VTB-1 brings their authentic sound, feel, and musical response back to modern pedalboards with a beautifully refined, highly stable, and road-ready design.