LSA Voyager GAN Amplifier

"I guess if a tree falls in the forest it really doesn’t make a sound. That is, only if you don't have the ears or equipment to hear it. " 

As I noted previously, there isn't much sense to respond to someone without the appropriate experience to comment on a matter (no matter what field, audio or otherwise) - e.g.

Because performance within the audible band is what audiophiles care about. But some folks must only listen to music where all the tones are at 1khz. So this test would be meaningless for them.

1khz is within the audible band. I’m guessing 1 khz is chosen because its harmonics are within a reasonable range. Perhaps a sweet spot. Not sure.

Some people may actually wish to listen to a 1khz tone, but there are probably other meaningful therapeutic influences in play should they wish to do so..

You may wish to listen to a 15khz tone by what you have said. A most interesting anomaly.  I don't think it would be very pleasant.

The point of the 15khz tone is to see if the amp struggles with those frequencies. As most amps have a much harder time as the frequency climbs above 1khz. And there’s meaningful content in music above 1khz.

Most audio specs aren’t to prove how good the gear handles music. They’re simply for marketing purposes. And when the consumer doesn’t understand what actually matters, 1khz is enough to get the job done. ASR is a great example. The quality chart that everyone buys gear based on is all of a 1khz THD+N spec. So Amir's partners (Topping for example), just need to design gear that maximizes that spec (sound quality with music irrelevant), and the commissions come rolling in from the frenzy of sales. 

As most amps have a much harder time as the frequency climbs above 1khz. And there’s meaningful content in music above 1khz.

Quite some time ago someone here was seeking a musical CD player.  They chose a Yamaha CDP, because Yamaha also make musical instruments.

Were you that person?

I would be really interested if you could show that they make even a 10th of a dB difference to the noise floor. In practice that seems difficult at best since you'd need an anechoic chamber to prove it.

Why would an anechoic chamber be required? The proper way to measure the noise and distortion of the system before the drivers is an audio analyzer. Would you measure an amplifier though a speaker in an anechoic chamber?