Quote Originally Posted by Werner Berghofer View Post
Stanley,
I don’t think that SPL (= sound pressure level, so that other readers may be able to fully understand what you’re talking about) is the most important criteria to evaluate the playback quality of a headphone amplifier. While of course a bicycle with an auxiliary engine may reach similar speeds (when driving downhill), there is no doubt that riding a fully equipped motorbike with enough horsepower reserve is much more fun.
You should have addressed that to Mark. I didn't want to pull him up on the use of SPL as a measurement of a headamp, but replied nonetheless to his calculations.