Anyone listen to Zu Audio's Definition Mk3?

As a point of reference in the past the Definition was a 6-ohm load and inappropriate for the Atma-Sphere S-30 although the M-60 was fine with it. Zu offered the Definition in a 30-ohm edition that by all reports was an excellent combination with the S-30.

The newer versions of the Definition seem to be an easier load and I was told be Sean at the 2011 RMAF that there is a switch that can set the speaker to a higher impedance.

You can do better then Atmasphere IMO. I mated it to my Superflys which were a more favorable 16ohm, and despite wonderful transparency and great bass they were pretty lean and analytical.

Follow Phil's suggestions and go big big bottle SET. There are great options on the used market that will be much better then the atma.

A customer's comments that seems to have some relevance:

http://www.atma-sphere.com/AboutUs#Feedback

Here is a link to another thread here on the 'gon:

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1220502548&openflup&27&4#27

He is using ZUs.

Setup is everything when you have speakers like this. If you also combine that with an OTL, you will have a very revealing system. The problem is that it might reveal more than you want to hear!

One of the bigger problems we run into is someone gets our amp(s) and then does not realize that their digital gear is really not all that great. The S-30, like all OTLs, has lots of bandwidth. It reveals poor digital gear for what it is.

Now some people might think that this is the fault of the amp but its not- revealing is revealing. Most SETs lack real extension on top (unless they are very low power), and due to their even ordered harmonic distortion, they sound quite rich (the ear perceives harmonic distortion as tonality...). SETs often add some of the missing harmonic richness that bad digital is lacking, plus smooths over the raucous high end. But it would be a mistake to think that that is musically right.

Now if your digital is working properly or if you play analog the S-30 will come off as quite relaxed, plus you get more detail (and in case anyone has got the wrong impression, this is true if you have a good SET too). 'Relaxed and more detailed' is the result of less distortion; ultimately you get more music.

Spirit, If I were you I would not do any mods to anything without having first run the system that you set up.

Simon did mention to me something about that cap mod, but it was in the context of dealing with cables and poor digital front ends. IOW when there is vinyl there is no hint of a problem.

Digital has always sounded brighter to me so this is no surprise at all. I have to say I am not used to anyone describing our amps as bright or lean. Just Google 'Atma-Sphere' and you will see what I mean. The Druids we had here did not have even a hint of it.