Originally Posted by MOTOSCUBA
Are there any home theatre receivers out there that will preamp output to an external system, all the sources connected to it such as Sonos or resident to it such as FM or AirPlay? My Denon 2313 will only preamp output from an external analog input. Useless.
Yes, but you have to move up to far more expensive products. In my book the 2313 lacks preamp outputs in the classic sense that are used to power the main speakers with larger amps. All it seems to have is a L&R pair that are designed for a second pair of speakers, presumably in a different room.
This is the back panel of a Denon 3313:
Note that it has a complete set of preamp outs that have the same signals as are passed to the internal amps for the usual run of speakers that one uses in the same room as the AVR.