Tyll uses one amp for his measurements. It would be nice to have one amp to drive everything with perfect results, but such an amp does not exist at this time.
Also Tyll has said it himself numerous times (latest in his Beats review) that measurements can be misleading. That said K701 and HD800 measure very differently if looked past fr response, where they are mildly similar.
And about K701 vs HD800 for n-th time sound wise they have as much in common as a baboon and homo sapiens sapiens. The K701 is the baboon for clarification.
I'm not trying to say i hate baboons.
The K701 with Marantz amp from its speaker taps has authority which it lacks completely from various hp amplifiers i have tried. This is not something one needs to abx to confirm, its obvious.
I quess its got enough current swing (peak) that regular hp amps lack, or whatever, i haven't got the time to investigate this. Although what i hear is more exciting sound, with fast hard hitting bass, but its still the same headphone with its plastic midrange and useless headroom with no imaging capability, not to mention the utter lack of microdetails (for me most 100$ iems do better in this).
Edited by Priidik - 8/16/14 at 2:52pm