Sometimes, all you need is one switch, one knob, and the pure power of sixties germanium – case in point, the Vox VTB-1 Treble Booster. This modern vision of a Vox classic loads in a refreshed silicon-based design to breathe new life into the beloved germanium sound with all the blissful simplicity of its original circuit. Optimized for Vox amps to sing at every register, the VTB-1 Treble Booster clocks a few more spots on an amp's range.

Original treble boost pedals relied on the germanium-based designs of their time. Such designs, like the Rangemaster, proved expressive and original, but eventually unreliable in their construction. Silicon transistors, the usual go-to for replicating the sound of germanium with greater reliability, can usually drain the magic from authentic germaniums. To rectify this issue, Vox turned to a hand-selected, biased silicon Silver Can BC109 transistor to replicate the nuanced response of original germanium transistors. What you get with this is a clean, low-noise, and authentically vintage tone that vividly widens the edge-of-breakup zone for Vox tube amps.

An onboard Fat switch widens this zone even further for a more versatile range of tonal sweet spots to play in. A rugged, vintage-inspired enclosure presents the retro aesthetic of original Vox devices with none of the temperamental, finicky nature of such devices while modern nine-volt center-negative power requirements keeps things easily worked into any rig.

Giving your Vox amp the authentic "oomph" you've come to know and love, it's nothing but treble.

• Vintage Treble Booster boost tone
• Custom, biased, single silicon Silver Can BC109 transistor design
• Onboard Fat switch for expanded frequency range
• Standard nine-volt DC center negative power supply requirements