Many of the Harman receivers are rated under their real output. Denon, Pioneer and other brands of receivers are often overrated (but not always). (source)

For example the Denon 2802 is rated at 90x6 but really outputs only 61x6 (or 74x5).

Jason

M80 HP v4, VP160 v4, QS8 v1 (3 in 6.1 layout), SVS PB12-Plus/2, Parasound Halo A21, Denon AVR-X4100W