Liquid Amps

Valvet may also fit what you are looking for.

Good to see Bongiorno's amps getting coverage here.

Sugden for sure.

What kind of speakers do you have and how efficient?

Dunno what "liquid" means to you (no disrespect to Atmasphere/Ralph) but certainly very smooth and non-fatiguing...so consider a Nelson Pass First Watt design.  I have an F7.  Great tone and depth to the presentation but only 20 wpc into 8 ohms (30 wpc into 4).  Reno HiFi allows an in-home audition.  Demo unit available for $2495.  A very good value, in my O-pinion.

Review here:
http://www.theabsolutesound.com/articles/first-watt-f7-stereo-power-amplifier/?page=2

Reno HiFi listing here:
http://www.renohifi.com/FirstUsed/FirstUsedInStock.htm

Class A all the way!

Happy Listening

In my current set up I am running Dali MS4 speakers with a Modwright KWA 150 SE amp and a pair of REL R 528s.  Does anyone have an opinion on that set up with regards to the topic or any other?