Thanks for replies!I have decided to move my xpa 1 s in the basement and just run xpa 5 with my integra 80.3 and Thiel 3.7 for main system.By using only xpa 5 as only amp I can upgrade speaker wires without cutting them up,as I had to for the ultra wide posts on the xpa 1 s.(why they made posts that wide I don't know?).I really didn't hear enough difference between xpa 1 and xpa 5 to leave monos in main system,family is happier with simpilar system also.My 805 speakers do sound better with the xpa 1s though.That move was more of an upgrade.