My Parterres now have about 150 hrs of burn-in as per Mr Suyama's (alleged) recommendation. I still remain sceptical of noticeable / significant / audible SQ changes after burn-in but I don't rule out very minor variations — they certainly haven't got any worse!
Have had about 25 hrs' ear-time already and I feel I must state this again: the Parterre is an exquisitely tuned IEM, a superb high-end IEM. Had another very short A/B session with my K3003s last night; these phones are different but close enough tonally, with small variations on all frequencies — what a fine IEM the K3003 is, too. Incidentally, still very surprised the K3003 is so close sonically to the HD800s while the IE800s, Senn's $1,000 flagship IEM, er, isn't… not even close.
The Parterres, as I noted a few days ago, handle every genre with aplomb, a true sign of a great phone, though obviously some albums, rather than genres, will sound better depending on recording and/or mastering quality, but even on poorly mastered albums the Parterres certainly deliver. Detail retrieval is excellent; layering is superb; treble continues to impress; low-end extension, tightness and texture are simply brilliant; fast passages are handled brilliantly; the midrange remains very natural and clear sounding. Low volume listening through the Parterres, like on the K3003s, is impressive—at higher volumes it never gets fatiguing. The out-of-head presentation is outstanding, very, very believable—brilliant full sound that is never thick (or thin!) or congested.
To these ears, the Parterre is an incredibly engaging phone, it gets my body moving / responding a bit too often — poor grumpy ageing sparrows who can barely move. (A reminder the Parterre is indeed a closer relative of the TG334 than of the F111)
(** Sincere apologies if I didn't use terms such as resolving/resolution, attack, transients, decay, imaging, coherence, micro-details, dynamics, etc.—perhaps next time. Or not.**)
http://grooveshark.com/#!/s/String+Quartet+No+8+Op+59+No+2+I+Allegro/44I9Bp?src=5 (a shame I couldn't find my favourite version but this one isn't that bad)
Edited by music_4321 - 8/22/13 at 11:37am