«  of very heavy »

I use it for a little over a year, at the beginning to power pair 802 (2x450w @ 8 ohms) and recently in Bridge (1400 W) to power a sub 502b, its excellent qualitée whether serious or acute, manages really well on the membrane of the sub either 31cm or 502b of a good 46 ...

excellent reserve power, especially in bridge

a great deal if buying Cygnus (since sold more recently)
I remake that choice without hesitating ...