If you have had experience With Atma-Sphere Amplifiers and pre-amps (I have owned every single unit) you will know anything that comes out off Ralph Little Lab is going to sound bigger and better than anything else on the market at the same price level and few times more. Its hard to beat his stuff at his pricing level.
Iv had amplifiers and Pre-amps costing 2 or 3 Times more and i still went back to his gear.
His Design may well not be everyones cup of tea, that is obvious as he tends to lean to Retro looking stuff. However if it comes down to Pure Sonic well those who have experience in comparing Atma to uber level stuff will know!
Iv owned every Amplifier from Ralph Except the MA-3 which is not practical for my needs.
From S30, M60, MA-1, MA-1 and the Nirvana
I own his MP-3 and MP-1 and the UV1
I have no doubt about this New Class D tech his working on!
it should be a concern for all the rest of the companies that are in the Class D Segment. Some of those companies are charging silly prices for bling boxes.