@klh007 , I had that same system, including one of a number of MC step up devices, until you mentioning the Premier 5s ( did not like tube amp bass then, nor now ); of course I did not have the IRSV. I know someone here made it very clear that Paul still has the Vs, as I indicated he retired them. What I meant to say, Paul is putting all of his efforts into the new speaker, as he has indicated on his channel. I own some product, that I consider " retired ". Hell, I am retired, lol.....I do prefer point source speakers, and panels and line source, do not do what I want. However, I was captivated by the IRS Vs, especially at the guy's home, vs the store.......they did / do some things, exceptionally well, that I deem important with a system . Enjoy ! Always, MrD.