There were only 58 pairs of Infinity IRSV ever made. PS Audio has one of the few and theirs is a real treasure. Find out the particulars of this reference sound system. If you want to learn more, grab a copy of Paul’s new book, The Audiophile’s Guide. https://www.amazon.com/Audiophiles-Guide-Stereo-Paul-McGowan/dp/B08STSRW49/