If you call Leonard at ARC (phone no. is on their website at audioresearch.com) he will tell you each and every change, and probably recommend you get the current model LS-25!
ARC SP9,SP9mkII,SP9mkIII
I am wondering if anyone out there can tell me the changes made in the three versions of this unit. I am aware of some of them but am looking for further info. And if you just want to tell me that brand "X" pre amp that you own is better anyway, please don't waste your time responding.
Thanks
Thanks