Amps which are Great, but either Unknown or Underpriced

I'm surprised to see all the posts mentioning the popular, well known brands which is not what the OP asked in the title of this thread. In fact, after reading the posts here referring to all the same old, same old brands, I feel like I picked up another issue of The Absolute Sound or Stereophile which always seam to cover the same manufacturers over and over.
Anyway, to reply to the title's original question...my vote goes for Clones Audio. I have Funjoe's 25ir and I believe it's phenomenal.

Sunfire amps

I think the H-Cat both amp. and
prramp. are the best kept secret in
audio. 
Going for 6k (the present 10X series
pre. & 11k for the amp ).
You can find them on the used market
for less than one forth the price and 
then have both units upgraded for 
4K. by H-Cat. and be rewarded with
a non fatiguing organic sound.

Other amps. Audio Research Classis
30 and the Lectron JH-50 .

http://hephaestusaudio.com/forge/hma-harpocrates/

I like these. Plenty of solid power for my Ohm 5000 speakers.

Anthem 225 Integrated Amplifier. 

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