Atma-Sphere Class D… Amazing

I'm guessing that "kuribo" is the same person who repeatedly posted very similar comments on another online audio forum using the name "goryu." That discussion was focused on comparing the sonic differences between Ncore modules and Purifi modules. The poster in question stated over and over that personal opinions about sound quality are meaningless. Naturally, statements like that are consistently effective in pushing audiophile "buttons."  

@sdl4 sounds about right as they both are  Japanese cartoon's, comics, children's games.  Must be sad. 

This guy is just messing you guys. He appears to hold a grudge. A cursory look at his posts (which is all I can bear to do) shows he is talking in circles and sometimes contradicts himself. He's gotten better at covering his mistakes but in the end, he's just messing with you guys, trying to show how bright he is, which I think, is his main objective.

All the best,
Nonoise

Perhaps you’re right, but judging other people motivations is usually fraught with some danger.
And if we assume that he is genuine, then his request for metrics seems appropriate in the context of the amp.

You are aware no-one is going to beat Bruno's numbers any time soon. For that reason alone I really don't see what you are so concerned about what measurements we get. If that is the only concern just buy a Purifi and be done with it. The problem I see with that I already outlined.

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I am sort of surprised to read ^this^…

I find the noise floor more distressing than the harmonic distortion. So the graphs could possibly add some insight. 

@jerryg123 

Call it Class A-G if it makes you happy but at it's core, the Benchmark was based on a switching power supply which is why it weighs 12.5 lbs. 

From S'Phile's coverage of RMAF 2013;

The Benchmark AHB2 amplifier, named in honor of the company's founder, Allen H. Burdick, who passed away just before the show, has a dynamic range claimed to approach 130dB, and outputs 100Wpc into 8 ohms, 170Wpc into 4 ohms and can be bridge to produce 340W into 8 ohms. THD+noise is said to be <–108dB relative to full output at 1kHz. John Siau explained that the THX modules are operated in a mode that gave the lowest noise and distortion rather than the maximum efficiency I wrote about in 2012. A key to the low THD is the use of 0.01%-tolerance resistors at critical points in the circuit. A switching power supply is used, Siau feeling that this was optimal because all the power-supply spuriae will be out-of-band and therefore more readily filtered. 

Ralph-would you be willing to discuss your Class D amp in terms of being true balanced (or not)? Please explain the circuit topology in terms of inputting and amplifying the input signal fully true balanced throughout. And assuming it does not, isn't this a compromise?