Like all Roll Music gear, the Vacbax is elegantly simple and ruggedly constructed. The soft bypass allows the Vacbax’s tube and transformers to be used as a unity-gain line amp, great for lending a little color or solving a wide range of interfacing challenges like only good transformers can. The hi-pass filter is available even when the rest of the EQ is bypassed.

Our amplifier is not a wimpy starved-plate design, nor is it an op-amp based preamp with a tube stuck on top for marketing appeal. It's all tubes and iron, with sophisticated modern power management circuitry to generate the high-voltage plate supply and high-current heater supply to power the tube. Careful design of this high-efficiency power circuit allows the Vacbax to work within the space and power consumption limitations of a single module.

The Vacbax is well suited to sweetening, brightening, or otherwise morebetterizing everything from vocal or percussion tracks to entire mixes. Buy two for stereo!