Just got the OR5 with 2xTClocks , HDMI Hynes reg. the other day, although I'm not quite sure this is better or just the same as the one I had before ( 2xtclocks,OTL & SPDIF Hynes). I had a few changes in the system since then and may be messing up with my hearing.  Anyways I'd be glad to bring it over this weekend if you like.

I already decided on a zana deux for the th900 and now with the sale the ecp just jumped in and punched me in the face.

I'm going to have to try the Zana Deux as well one day based on several of your feedback since it also seems like a good synergistic match with the TH900s. There very well may be several synergistic matches, each with their own way of presenting music that makes sense to folks, so there's no ONE killer amp out there. I would rest easy with your choice and interested in your impressions on HF or here.

Any one can give me some clue in the difference between the three options of L2 available ?
http://www.ecpaudio.com/contact.shtml

Quoting Doug@ecp as he explained to me the differences:

"The standard build is the amorphous input with the nickel output. It is what I recommend unless you actively want something different. Don't take that to mean that there are upgrades -- it is the standard build because I thought it could not be improved upon without entering into real esoterica.  The amorphous transformers are the top of the Lundahl line.

If you switch to the nickel input, the sound is very slightly warmer. Some people prefer it, though the difference is pretty subtle. Kevin Carter of K&K audio (who is the Lundahl importer) describes the difference this way: http://www.audioasylum.com/forums/KandK/messages/8975.html So if you think the HD650's are tons better than the HD800's, you might like the nickel inputs better.

Similarly, the pinstriped outputs are slightly warmer (more of a difference than with the inputs), and a little less detailed -- tubier. (I am of the opinion that the things that make tube amps sound tubey are actually transformers, capacitors, and topology -- not tubes really. Tubes are quite linear.)"

Hope this helps everyone else considering his amps.

Tari:

Which ECP is the best with the HD800? Although I'm really leaning for the ss option at this point if it mates wee (Levi incoming and all).

-Daniel

I would agree on all counts -- the L-2 is slightly preferable for the HD800s, and the DSHA-1 is currently sold out.

That prototype Black Diamond / Walnut combo looks amazing.

I've been listening to the K812 with my BD, and the pairing is just fantastic. Really added another level of solidity and definition to their presentation. Vocals especially felt like they were more distinctly out-of-head.