96 dB is pretty good, but it’s likely that Gene is hitting the limits of his APx585. These numbers are worse than what SU was showing.
Still, look at low power. At 500 mV, the AV10 is about 0.01%
View attachment 281807
Compare that to the good channels of the Yamaha A6A. At 0.5V, it is better than 0.01% with all Yamaha DSP on and 0.005% with DSP off which shows that the APx585 can get down to that level
View attachment 281809
If I do the math, 0.5V from preout means
14V with a 29 dB gain amplifier
9.6V wih a 25.7 dB HypeX amplifier
With a 4 ohm load, you are looking at almost 50 watts or 23W with the HypeX.
Since you should be doing 85 dB averages at reference level, it really shows you you are dealing with very low voltages most of time.
Granted, I just showed that 22 dB SINAD isn’t as bad as you think… but with home theater amplifiers, I would argue that you end up staying at much lower preamp voltages than you do with the scenario of a traditional DAC where 2V/4V makes a lot of sense as a number if you are using traditional amplifier gains.
In other words, I think the full curve is a lot more important for AVRs than they are for 2 ch.
@amirm, did I do the math right? Since 5W is the standard we use for AVRs, does it make sense to ALSO show a AV processor dashboard at 0.2V or so (which gets you to 4.5V with 26 or 29 db gain amp, rounded to a single digit).
I think this also shows the value of low gain amplifiers like the AHB2 which will really let you take full advantage of the sweet spot of your processor.