Excellent point, potterma. You're exactly right, the 24.2w are not actual watts used by the headphones. I did not mean to suggest the power shown on the display was the actual power used based on the HE-6 load. My apologies to everyone for not being clear on that point.
The post merely serves as an example of the output level one could expect to hear relative to the peak meter readings that were shown from this amp.
Than being said, I thought it was interesting to note that the meter reading peaked at 24.2w, which came as a surprise to me because this value is much higher than the other ranges I've seen mentioned elsewhere this thread.
What the number also demonstrates is the amount of power reserves available with this particular amp when driving the HE-6 to 100 dB. The MX-1000 is, of course, overkill for this application, but if I'm driving the HE-6 "hard" I'd much rather use an amp with excess reserves vs driving an amp to clip as would be the case with the little 10wpc @ 8 ohms Trends amp which I also use quite often (at normal listening levels).
This was just an interesting exercise to quench my curiosity. I rarely bother to look at the meters on the MX-1000 (even though they are fun to watch).
Meters are fun to watch :) So are oscilloscopes.... Your 24.2 W into 8 ohms represents 13.9 V peak (assuming the 24.2 V is a waveform peak value and not some short term average number). I've captured peaks as high as 20 V with my oscilloscope driving HE-6's with a Carver M-200t amplifier (125 W into 8 ohms). Yes, they do like power!
Your meter pic does a good job of emphasizing that, yes, you do want an amp with some oomph!
Edited by potterma - 2/26/14 at 8:38pm