Sorry my userid is so presumptuous. My old (since 198x) K340's are why I joined
Head-Fi, and I don't know how to change it.
And I hope there's no rule against posting to a thread that's 8 years old, futile though
such a post may be.
So, sensitivity is 88 dB/mw in German and 94 in English, or is it The Continent vs.
America? And what are the implications for classical vs. the Blues?
I guess the 88 makes more sense for the observed difficulty driving the 'phones in the
base, where the measured impedance, from a graph in an article at InnerFidelity.com,
is about 350 Ohms, not a big deal in itself, I think. But that graph also has a 750-Ohm
peak at 10 kHz, which I suppose could wreak havoc in the treble, especially with harmonics,
unless the amp can supply a lot of what the load needs (voltage or current?), and fast.
See, I'm trying to use specs, measurements and others' observations to narrow my search
for an optimum (neutral / accurate) amp, where price is one factor. Can you tell I'm an