Single-ended operation avoids the recombinant errors that arise when an audio signal -- split into phase and anti-phase to be separately amplified as in push/pull designs -- is reassembled. In a single-ended design, the signal remains whole from input to output.

The audible benefits? A sense of naturalness and realism -- often referred to as "the single-ended magic" -- that p/p efforts lack nearly by definition. The disadvantages? Reduced power since a single output device is now asked to do the job for which a p/p design would employ at least two, and in most cases multiple twin banks of paralleled devices.

Art Audio's single-ended designs are expressively designed to drive even speaker loads that traditional SETs of equivalent output ratings cannot. The model-specific pages include actual owner feedback to clearly indicate what speaker loads each amp is suitable for. However, there naturally are limits to what can be achieved even wiith brilliant design and modern high-current output tubes.

That is why Art Audio makes available custom monoblock SET versions of the PX-25 and Jota. They're designed to wring the utmost of power and drive out of their respective circuitry.