Just thought I'd add a bit,I changed the interconnect between power amp and pre with Zanash auag and was impressed with the results,interconnects between rest of stuff is all JPS and I have not found the need or anything much better. Recent speaker cable change was a big difference.Bought some Zu Wax cables and the soundstage grew dramatically,so much so that when a friend visited he aked what I had changed.Prior to the installation you really had to be seated to enjoy the sound.When you stood up and walked towards the speakers the sound stage diminished now it appears to have much more air / space . These are definitely worth a try .