I first heard the Infinity IRS at their original introduction at CES in Chicago in 1980. I finally was able to attain the set up I had in my mind for sometime in the past 12 months. These are a VERY special set of IRS V's. And I've NEVER heard anything like them. In addition to the Infinity's are Pass Labs XA200.5's, ARC Ref 6Se,VPi Prime Signature with Hana cart, PS Audio P20, DAC, Transport and AirLens. Along with fully functional Pioneer RT1020L, Teac 334S and soon to be added a fully restored Teac 3440