Anyone using Joule Electr VZN100 MKIII amplifiers?

I can testify to a LA150/Berning ZH-270 combo with the Merlin VSM-MX. Magnificent!

I believe that 100 watts of Joule OTL power would be too much heat and more power than required in a small room although you don't give specific dimensions. I had a Joule VZN-80 in my 16X18 12X9 L-shaped room and it was more than enough power but oh my, the heat!! Carefully consider this before committing to the 100 watt Marquis in a small space, it may be more than you bargained for unless you like listening to music in a sauna, only half kidding but you get the picture, 800 watts at idle can heat up a small space fast.

Sonic wise I heard that specific combo under show conditions set-up by the Master but not in my own listening space. I did listen to several pre-amps through the Merlin Joule combo, a no brainer it is so good. As Danamc notes, the Berning is also a superb alternative although the amps are sonically different enough that one will be preferred over the other. The noise level of the Berning is lower than the Joule. I found the Joule to have an unobtrusive hum from the power transformer which didn't at all interfer with the music.

Depending on your tastes, you may prefer the LA100 MKIII to the LA150. That has been the case for some owners of the LA100 who upgraded to the LA150.