Impressions
First of all, big thanks to everyone who showed up this weekend, especially David (presently42) who helped a lot with the booth and entertaining people throughout the three days.
My second thanks go to fulcrum audio who were really nice during the whole show and let us play with the he-5, ef-5 and burson ha-160 as much as we wanted.
Finally, I'd like to thank the Sennheiser rep who lent us a pair of hd-800 for the week-end. This was a clear highlight of the show and was praised by every visitor (and us of course!), especially friday and sunday when we didn't have another pair to demonstrate.
Here is the secret I've kept until the meet: the mystery cartridge on my mmf-5 is a clearaudio aurum beta s, which is their third best wood MM cart (just below the virtuoso and maestro). 725USD retail right now.
Now, some impressions:
Beyer T1: Felt really nice, but they were in the loudest part of the room, with people chatting all the time so I couldn't have a good impression. However, they had a kind of "growing" factor with sweet timbres and overall smoothness that could make them real keepers over a longer period of time, as opposed to hd800.
Now,
Hd800... I have pretty mixed impressions about those. From a technical point of view, they are absolutely flawless: quick, precise, tight, detailed, extended, comfortable, well-built. But... every time I put them I liked them less than the previous time. Really, I felt that although they are awesome technical cans, they might be lacking the coherence of some of the lesser pairs we had on hand (think about big JMLabs vs. Tannoy: the latter, although not very technical, achieve a super-coherent sound), and their treble could be razor-sharp on some songs. The biggest turn-off for me was when someone else had exactly my thoughts and said, "Well, you just have not to play certain cds and they sound awesome". When I try new equipment, a good sign is when I find something good on every cd I put, a very bad sign is if I put a new cd and think, "Well, let's try another one, this one isn't so good". Having to choose cds and not beign able to enjoy everything is something I like to avoid as much as possible.
Putting the on the twinhead helped the treble, even though they sounded pretty sharp at times, but I guess the sovtek 2a3s might be rolled to smoother ones like NOS RCA or maybe shuguang black bottles to smoothen everything. In my opinion, high-power tube is the way to go with the hd800 (and tube source might help

. Raysonic FTW.)
Also, the behringer DAC that was used sounded quite sharp to me. Very good overall, technically extremely good, but a bit lifeless and sharp, so not a really good compliment to the hd800s.
Hd650: My new love. On previous listens, I've found them slow and wayyyyy too lifeless, but after putting my Twinhead with K701s in OTL mode, I thought, "Hey, these are quite dynamic but too bright to be enjoyable, so I guess 650s might work well instead". And so they did! The more aggressive sound of the 2a3 sovteks I have right now complemented the 650s really well, tightening the bass a lot and giving the treble an extra sparkle. It also had power in spades (the volume was about 1/4 on the knob to achieve ear-splitting levels) and that translated in bigger dynamics as well as better micro-dynamics. These are on my short buy list right now.
K701: Good, but not quite my taste. Even on the burson and loads of power, I kept wanting more richness in dynamics, timbres and textures. Bass surprised me though as I've never had heard them with proper amplification before. Some people reported they were brought to another level on the phoenix but I couldn't hear that combo. Next meet maybe.
HP-2: Still a so-so for me. Detailed, textured, but similar to the k701: I keep looking for more in songs than just loads of details. But I've not heard them properly amped and sourced, and not for a long period of time. These
might be growers for me but then again I'd have to have them at home for longer auditions.
Ad2000: I keep going back to these (kept them for more than two years now) even though they lack the technicality of the k701, hd650s, hp-2 and hd800, they have rich timbres, texture in spades and quickness that gets better and better as you reduce ambient noise. I still think no-one here has listened to them to their full potential : they are easily 50% better in a dead quiet room. The deep bass, that can be heard even in a noisy room, really kicks in and blends perfectly with the rest of the spectrum, and the attack and decay become MUCH more natural.
Friday, during one of the quietest moments of the day, there is one guy who walked in the room and after trying the k701s, ad2ks and hd800s, turned around and said, "I like these (k701) and find those amazing (hd800), but these (ad2000) can play music! I feel like I have a live person in front of me." That sums my thoughts about them pretty well.
JH13: My second biggest fail of the week-end. Couldn't listen to them! When I decided to put them, Guillaume had just left with the box. Crap.
Hifiman HE-5: Slight disappointment, but they might just not be my cup of tea. Good bass, detail and soundstage, but they had a kind of pushed low bass and upper treble that bugged me every 10 seconds or so. By then I was listening through the burson and the xindak front end, but the burson sounded really good on the k701, ad2000, who both have treble problems when badly amped so I guess that is inherent to the phones. I guess these may be another pair of growers but I'd need a longer audition, especially at home with two smooth sources (raysonic and music hall mmf-5).
Burson Ha-160: The most polyvalent amplifier I've heard to date. Had loads of power but could still retain the subtle nuances in music with every headphones I've used on them. And for 700$ I think it's a solid buy for people who have multiple headphones and want some quality amplification throughout.
Woo Audio 2: My biggest fail of the weekend by far. This was the one I wanted to listen the most out of the amps at the meet, and I arrive about 5 minutes late saturday and lemat was left with his amp.
Audio-Gd Phoenix: It did sound very good driving the hd800s balanced, but I couldn't listen to it with my source and headphones so I don't have any reference point, except that it might sound a bit harsher (but a lot more precise) than the Twinhead.
More to come soon.