I am sure I am not the first person to come up with this, but I haven't seen it mentioned on the forums so thought I'd share my findings. Although I don't think I specifically need to use the sub for music, I thought it would be nice to have the option, and as my sub won't allow dual inputs simultaneously, and is on the other side of the room to the amps, so tricky to run more cables, I have come up with a workaround, that seems to work. The connection is to use the pre-outs from the integrated amp, back into an input on the AVR (eg cd input) and set that input to run in stereo mode only, with the sub in use, and set a crossover (I went for 60hz). I know that Marantz and Denon AVR's allow specific settings for 2 channel listening, not sure about other AVR's. Then, when listening to music with the integrated amp, if you turn on the AVR, select the cd input, and turn the volume up (for me -5 seemed to be about right) the subwoofer starts thumping away in time to the music I am actually using the sub out of my graphic equaliser to achieve the same thing, as I am already using the pre-outs of my IA into a power amp. But, the principle should be the same. @gibbsy @dollag @exponential - thought you might like the info.