Benchmark AHB2 Power Amplifier: interesting technology, great price! Thanks for heads-up and the link.
If someone tries one, especially ACHiPo in comparison to your Atma-sphere MA-1’s, please give us a shout out. The 100-watts would seem to be marginal and as such questionable. However, numbers can be misleading. Especially when comparing the more usual Class AB vs A circuits.
At any rate, hearing (particularly with SoundLabs) is believing! I rule nothing OUT, or for that matter IN based on specifications, technology, part types, topography, etc., without hearing. In our wacky hobby, I’ve been surprised both positively and negatively too many times to believe otherwise.