Join Date: Aug 2014
Location: Earth, Solar System, Milky Way Galaxy
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My mistake, but big deal. I goes from 175 @ 1% two channels driven to 125 @ 1% 7 channels driven, a "whopping" 1.5dB, which is barely audible. Add two more channels, what do you think will happen? Another fraction of a dB? Again, zero chance of a soundtrack driving 7 simultaneously to full output, zero chance of doing that with 9 too.
While we're at it, the Pioneer SC-87 is rated 810 (ACD), which is 90/channel, which is 1.5dB lower than the Integra with 7 driven, probably 1dB lower with the Integra driving all 9.
When driving two channels at 8 ohms to about .1%, the Integra does 154 Watts (measured) and the Pioneer specs at 140, which is a 0.4dB difference, and reflects a more realistic assessment of real headroom in operation with program material.
My recommendation stands: ignore the power amp. And just adding, throw that money at speakers.