The Bryston 28bcubed mono amp dumps 6100 BTU/hr at 1000W output into 8 Ohms and 2700 BTU/hr at 166W. 6100 BTU/hr is my heat-rated gas fireplace on low.

Looking at it a different way, that Bryston needs 1800W in to produce 1000W out. And 800W in to produce 160W out. Wow!

The ADA is a tree-hugger and the 28bcubed is a depletist.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated