I am a little stuck! I have a NAC 272 pre-amp which feeds into a NAP power amp, with B&W diamonds. I wanted to use the speakers and amp within an AV set up and purchased a relatively inexpensive Pioneer AV amp unit. I did this off the back of being told that I could use the Naim pre-amp as its own input to the AV unit, thereby using the Naim system for the fronts and the AV amp to drive the centre and rears. I plugged the pre-amp feed from the AV amp into the NAC 272 and am getting sound from all speakers except the fronts, which shows it clearly isn't working. Has anyone else tried this? Can anyone help me to get it working?