These are burst power measurements. Let me know if you like them and I will run them in future reviews. I think there is some merit to measuring this way as music is not continuous sine wave.
Absolutely love them, thanks!
I think they are almost (almost, not quite) more valuable than continuous power. The peak measurements are so much more representative of how they perform for real music, as you said.
Continuous power measurements are valuable because they show us how robust a design is, and a torture test like that can tell you how a unit will perform under the worst possible conditions. But as you say, this is not really related to actual musical performance.
Personally, I think 67 watts is not enough for home listening.
I find that many of my amps in the 30-80 watt range get plenty loud for a lot of situations. Maybe not for a main system in a large room but generally they can be very enjoyable.
After all the difference between 67W and 100W is less than 3dB.
67W gets you about 101.5db continuous from 85db/W efficient speakers at 8'. So you can listen at 80dB average and still have 20db of headroom. And of course we get another few dB on top of that thanks to those dynamic peaks.
Today's speakers have become smaller in size and shrunk in efficiency, needing fair bit of power to get them to produce proper dynamics.
That's the problem with small speakers, right? You can't just dump power into them to get high SPL. Most of them can't handle much more than 100W.
Bottom line IMO is that if you want some real SPL and satisfying dynamic peaks generally the way to get there is efficient speakers (possibly coupled with powered subs). With small speakers you can't get there with any number of watts.
Even a high-power 100W or 150W continuous amp will only get those tiny bookshelves 3dB louder. Most small bookshelves will be distorting by that point anyway.