Nuforce STA200

How does it run so cool? It is almost cold to the touch, even under load... Are we sure it is class AB?

Based on the same circuit board as the Job 225 so not Class D. 

Brad, does it run cool on the speakers currently being driven with the Proceed ? It is AB for sure. As a correction, if I may. The STA 200 does not use the same circuit " board " as the Job, but it does share the same circuit design. The design is exclusively Goldmund. There is a lot of fascinating information about this circuit on the web, licensing agreements, and differences between the Job and the STA 200, and much more. Enjoy ! MrD.

I've never had it break 95 degrees on the heat sinks which by the way is about the same as the Class D amps I have owned.  The Job did not run hot either.  

When my 160w monoblocks needed repair I ordered the Nuforce from Amazon as a stopgap.  To my amazement, at half the power it ran my very inefficient speakers wonderfully, almost equaling the sound of my original amps.
When my monoblocks went down again I thought it was time to replace them permanently, so I bought used a highly touted expensive Belles Hot Rod amp.
In short, the Belles couldn’t cut it.  It just didn’t have the power of the Nuforce which sounded much better.
I can’t  believe the quality at that price.  Amazing!