Krell knocked off Jeff Rowland

I am not aware of the new JR integrated. There is only one integrated I know of, it's called the Concentra. It has heat sinks, Kind of inverted looking. You're observation that it runs hot seems unusual in that this item was just recently revieved by TAS and the reviewer commented that the unit runs decidedly cool. This is because the thing is so overbuilt (not in a bad way) that it could be goosed to get twice the power if they wanted. Go to the Jeff Rowland site and see for yourself. www.jeffrowland.com. You can see in photo 1, the amp clearly has heat sinks, just not those shark fins we are all used to seeing.

There is a new JRDG integrated amp called concerto for $ 4000 estimated....looks like that chassis is from model 10 amp. I bet that in few months this new amp will be a talk on town. Jeff Rowland ...still the best

Axomoxa, your are referring to the older Concentra. The original poster is referring to the new Concentra II, it uses the same switch-mode power supply and has the same (heat sink-less) chassis design as the Model 10 and Model 12 power amps. Yes, the new designs do run quite a bit hotter than the older models, but no worse than many other amps I've had around. Give your Concentra II a few inches of breathing room in your rack and you'll be fine.