I am not asking for any data of the loudspeakers themselves.
I just want to know the SINAD of the power amplifiers being used for each woofer...the same way I am told of SINAD for a DAC, a preamplifier and a powered amplifier. You don't go and measure the loudspeaker output of a system made up with separates; instead you measure everything in the chain.
Well, same for those amplifiers inside powered loudspeakers...or am I to pay 6000$ for a pair without knowing ?
Should be higher than some 96 dB to be happy enough... isn't it?
What’s the point of measuring SINAD of internal electronics when you have distortion measurements of the total end result?
The end result is all that matters. The only reason we measure separates separately is because... they’re separated, i.e. we have a choice in each component, and audiophiles (being the naturally obsessive perfectionists we are) sometimes want the best we can get for each component, even if the difference probably isn’t audible.
When it comes to an active speaker with integrated DACs and amps, you have no choice. You are not a part of the system building process anymore. If you don’t like that, tough. If you seriously think you can do better than the experts at Genelec and Neumann, then don’t buy active speakers. If you do buy active speakers, stop worrying about system building and focus on the measured end result from the integrated system. Is the total distortion from the speakers higher or lower than competitors? Etc. (Hint: It's usually better.)
Complaining that you don’t know the performance of the DAC/Amp inside amp active speaker (instead of the end result) is like shopping for the performance sedan with the fastest 0-60 acceleration (let's imagine this is the metric you want), and refusing to consider a Tesla Model S that demonstrably out-accelerates its competitors, just because you aren't comfortable with not having fuel pump specs. Electric cars don't use fuel pumps, obviously. But honestly, demanding DAC/Amp specs from a speaker with active digital crossovers is not that dissimilar to demanding fuel pump specs from a Tesla: These products are
completely different (and generally superior) system designs vs traditional passive speakers[1].
Reliability aside, all that should matter is the performance it achieves in the end. Internal components are just a means to that end. It would be completely reasonable to be concerned about the reliability of internal electronics, but that's a separate discussion (and something where Genelec has probably the best industry reputation).
FWIW I have among the best DAC (Topping DX7 Pro) and amps (Hypex NC1200) powering my Salon2’s, and I think my Genelec 8351B’s sound cleaner. I get the most precise, accurate, clean, distortion free sound I’ve ever heard from the Genelecs. I don’t know how the Salon2’s measure for distortion, but the reason I prefer them for relaxed listening in a large room is more due to my preference for wide dispersion than anything else, combined with their generous bass (or that’s the best theory I have so far). I also appreciate that I can fill very large rooms to reference levels with the Salon2's without coming close to stressing them, but that has nothing to do with distortion/accuracy. Having heard them both, I suspect someone who prefers more precise/analytical/accurate sounds and cares less about wide (perhaps artificially so) soundstage will actually prefer the Genelecs,
no matter how perfect the DACs and amps are connected to the Salon2's.
In other words, as someone who has an overkill DAC/amp with Salon2’s and Genelec 8351B’s, trust me,
you don’t need to be worrying about internal component quality of the Genelecs. I love both these speakers very much in slightly different ways, but a clean distortion-free sound that is neutral and accurate to absolute perfection is exactly what the Genelec 8351B's excel at.
[1] Remember, active digital crossover speakers have multiple channels of DSP->DAC->Amp, each one individually tuned for each transducer (where each transducer covers a completely different frequency band). It would be completely meaningless to try to measure the electrical frequency response and SINAD etc. separate from the transducer it feeds, because this signal chain is intentionally designed to compensate for the limits of the physical system they are paired to. These DAC/amp/driver combinations are inherently
not separable, and trying to do is about as silly as demanding fuel pump specs for an electric car.