I have a new IsoTek Mini Sub http://www.isoteksystems.com/minisub.asp being loaned to me at home from 6pm this evening. As my speakers plug into the mains, I reason that for £550, it might well be a cost effective all-round upgrade. Room for the cd, pre, power, 2x speakers to be plugged in, should, I hope, see audible changes. Results to follow this time tomorrow! Tim ps - I have just noticed that 2x outlets are rated higher than the others (10 as opposed to 6.5 amps). Should I plug in the Aerius i into the higher rated or the power amp + the pre?