Behold! An incredibly powerful tool for all of your rock n roll tones. The British Black Belt is comprised of 2 separate circuits in one simple box. The FULL channel is a single stage gain circuit very similar to the one found in a common "belt loop" mini amp, which when run through a proper rig sounds massive and dynamic.
These small amps have long been a secret recording technique to layer instruments yielding huge gain response. In an effort to maintain that approach, the Black Belt has a 2nd channel that emulates these small blown out tones. The frequency range is a bit more even, lending itself to the sonic realm of any number of small battery powered amps that artists have used over the past decades.