Can I do this ?

This might sound a bit convoluted so just bare with me. Right now I run crimped spades out of my Adcom 555 into my Niles speaker selector which still leaves the banana plug hole option available. For most listening I audio mute my Klipsch smalls and run my sources via audio out of my Yamaha RX-665 w/ them being i-net radio, i-pod and dock, tv, and fm into my tuner input of the NAD 1020a pre/amp and it works well and I get every source to play through my 2- chl system. Can I still take a set of bananas from those open Adcom binding posts and plug them into my pre-outs of the Yamaha as I did before I went w/ 2 chl giving me my H/T with authority back and not clipping the Yamaha w/ the understanding that all my other speaker sets would be in the off position on the Niles selector and again run the Klipsch smalls.
2chl- Adcom GFA- 555-Onkyo P-3150v pre/amp- JVC-QL-A200 tt- Denon 1940 ci cdp- Adcom GFS-6 -Modded '87 SDA 2Bs - Dynamat Ext.- BH-5- X-Overs VR-3, RDO-194 tweeters, Larry's Rings, Speakon/Neutrik I/C- Cherry stain tops Advent Maestros,Ohm model E

H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #400HD Speaker set-

Bdrm- Nikko 6065 receiver- JBL -G-200s--Pioneer 305 headphones--Sony CE375-5 disc