Esto es de una prueba del SR7011 (no cambia nada la amplificación con el SR7012):

Marantz SR7011 A/V Receiver Review Test Bench



Test Bench Two channels driven continuously into 8-ohm loads:
0.1% distortion at 138.7 watts
1% distortion at 169.1 watts
Five channels driven continuously into 8-ohm loads:
0.1% distortion at 104.9 watts
1% distortion at 117.0 watts
Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 75.1 watts
1% distortion at 90.4 watts

https://www.soundandvision.com/conte...iew-test-bench

Como ves la potencia por canal va cayendo a medida que se añaden más canales (ahí sólo midieron hasta con 7).