Also on display at the Audio Advancements' booth, the Altmann BYOB Amplifier, naked as it was, caught my attention. Why no clothes? The idea goes that doing away with the enclosure eliminates the chance for resonances which might otherwise corrupt the original signal.
And you'll never guess what "BYOB" stands for. In this particular application, it's: Bring Your Own Battery.
The Altmann Amplifier is powered by a basic car battery. Altmann, explained Hart Huschens, recommends Optima Red Top batteries, but any old battery will do. Even if it can no longer start…