In general, it seemed like JA was troubled by measurements which would normally be attributed to AC artifacts or less stout power supplies. That may not make a difference to our subjective listening, but I wonder if these measurements may indicate opportunities for future improvements.
That is what I was troubled about as well. As you know, LIO's circuitry is fully isolated from AC artifacts (and there are no power supply transformers internal to LIO that could sometimes can radiate noise). So I'm not sure what he was picking up on his bench. Perhaps noise from the signal generator or something else connected to the inputs/outputs? Or noise from florescent light ballasts?
Or??? I was not there during the measurement process (not allowed for, and I am not questioning their policies), so I cannot say with certainty.
And LIO's power supply is very
"stout," with >38,000,000uF of capacitance and super-low ESR / inductance via the ultracap banks. In theory, it can unleash a few hundred amps instantaneously (of course I'm not recommending that you arc-weld with it!
So more stout than most conventional amplifier power supplies in that regard!
Does the LIO clip much earlier than 25 Wpc?
Well, JA measured it to reach clipping at 17Wrms into 8-ohm. What does this difference mean to you in terms of how much
lower of a max SPL that you would be able to achieve out of your speakers vs. my measured 25wpc into 8-ohms?
We're talking 1.6dB difference, so very little difference in max SPL in reality.
that I was concerned about
Do you find that you can play your speakers loud enough with LIO's MOSFET AMP? I'm not talking about the position on the volume knob. I mean can you play your music, using your particular speakers in your particular room, as loud as you need to? Or are you reaching audible distortion (clipping of the amplifier) before the SPL in the room is loud enough for your needs/tastes?
If it plays loud enough for your needs, and you enjoy the resulting sound reproduced by the pairing, then there is little to be concerned about with regards to power.
Another thing worth mentioning is that there is RMS power (continuous power), and there is peak (aka "transient) power. Two amplifiers with the same RMS power rating may very well have different peak power ratings, and perform differently into different 'real world' speaker loads and real types of transient musical signals that they are instantaneously being called upon to amplify (vs. sine waves, or triangle or square waves on the bench). So in this regards, bench measurements only focus on a small part of the much larger picture.
Listening is to your ears is as art is to your eyes. How do you measure art? You can measure the size of the canvas, the amounts of different colors used, the amount of light and dark... but how do you measure how art communicates with you?