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.
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