Onkyo amp-to-receiver-to-speakers...

I am getting an Onkyo TX-8511 and an Onkyo M501 power amp and have no idea how to connect these and a pair of 90's Advent Heritage wood face speakers. I can't figure how the receiver connects to the amp as the TX-8511 doesn't appear to have any specific output options for an amp. The amp has an AC outlet and an L/R input along with speaker connections.
Any help?
The receiver would connect to the amp using it's preamp outputs, except...that receiver has none.

It's a no-go