My HD800 arrived earlier today.. I've done quite a bit of listening with it today.. exclusively w/ the ODAC & G109.. the resulting sound I experienced was simply jaw dropping. Everything that the numerous detailed reviews I read & impressions I gathered from members I trusted was laid forth in glorious fashion right before my ears.
It didn't take long to realize this was an absolute 'end game'-type phone for me. The quality with which the G109 drove the HD800 was spectacular.. it drove them with the kind of grace, control, and synergy the HD800 seem to (ruthlessly) demand. I wasn't playing much, if any, reference-grade material either (mainly a variety of well recorded music from my MOG.com subscription). Playing plenty of non-reference grade material, I was pleasantly surprised to hear how -listenable- (pun unintended) it all still sounded with the ODAC/G109/HD800. The areas the recordings lacked were clearly noticeable.. but those irregularities weren't served in quite the brash, unforgiving, and clinical manner that I feared they would be and render the music unlistenable. I wondered if all that talk about the HD800 being a merciless beast that spotlights poorly recorded material without restraint was overblown? What I really need to do is credit the G109 here.. it presents oodles of detail, but keeps the HD800 from sounding harsh & non-listenable with less than perfectly recorded material. When I play well recorded material, the ODAC/G109/HD800 steps up to the plate to deliver a quality presentation that brings tears to my eyes.
The G109 downright shows off when it comes to displaying bass depth, texturing, extension, and detail. The words 'visceral', 'effortless,' & 'lifelike' keep coming to mind. The mids are as clear, remarkably transparent, and effortlessly delineated as I've ever heard. Coming from the HD600 (arguably my favorite full sized headphone), the HD800's mids aren't positioned as forward (but still remain the focal point of the sound).. the HD800's mids sound more transparent, coherent, and multidimensional, too. The quality in which vocals sounded delicately 'lifted' above the surrounding midrange instrumentation while being portrayed with stunning accuracy & ease was simply hypnotizing. Sennheiser's flagships have always been known to possess lovely midrange presentation.. but what I'm hearing from the H800 is unlike most anything I've heard before. Truly one of a kind.. and a new benchmark for Sennheiser. The treble is bursting with detail, air, and brilliance.. the G109 seems to offer an elegant tinge of smoothness that maintains the HD800's terrific transparency while gently taking the 'edge' off the 8K spike. Being that the G109 shares a very similar pedigree to the Violectric V200 (an amp that's said to pair exquisitely well with the HD800), I guess I shouldn't be surprised by how satisfying I found the G109 to pair with the HD800.
The ODAC fulfills it's duties admirably in that it offers terrific clarity & transparency... quite worthy of what the HD800 demands. I've always admired the ODAC's excellent soundstaging & imaging capabilities.. the HD800 most certainly abides as synergy & interplay here is quite apparent. Well recorded live sets are downright distracting to listen to.. in that they're so thoroughly engrossing. I can't concentrate on reading a book or do work-related activities with live sets playing in the background as I'm continually drawn into the sublime presentation & spatial queues the HD800 so realistically portrays.
I might be in the minority of HD800 owners as far as this is concerned.. but I don't really listen to any FLAC or high-res material. 99% of what's stored locally on my NAS/hard drives is ripped to 320Kbps MP3s.. while most all my (daily listened to) music is streamed from MOG, Soundcloud, and elsewhere on the web. I've found the mixing & mastering quality of music to be far more important than the format (lossy vs lossless) that said music is ripped in. Sure, the appropriate rig will offer slightly(?) better sound quality if fed a lossless rip vs a 128 Kbps rip of identical records (w/ mainly dynamics and "leading edge" detail improving on the former format, I suppose).. but I listen to a lot of instrumental hip hop, jazz, blues, soul, funk, electronica, etc... music that simply doesn't (consistently) have reference grade recording quality that many classical pieces and (reissued/remastered) vintage collectors albums have. So, the hassle just isn't worth it to me. I don't mention this to spark controversy.. it's intended to be informative for those in a similar situation to me who might shy away from the the HD800 cause they assume it only sounds good with certain genres & that the music must be of the type that traditionally dominates the remastered/reissued market.. I'm here to tell you that's not true.. the HD800 sounds jaw dropping good with a very wide variety of music.. regardless of genre or digital format.
I'll have more thoughts on the HD800 in time.. but what I can say is that in the very short time I've had the HD800.. a phone I bought without ever having heard once (I bought it off the strength of reviews, impressions, and a sneaky premonition I would enjoy it's sound).. is that it's an 'end-game' (full sized) phone for me. The hype is deserved!