Just listened to these for the first time as they arrived this am. I purchased on Polk eBay. 1st cd, Dark Side of the Moon, 2nd Ellington at Newport, 3rd, Buddy Guy, Damm Right I Got the Blues, unbelievable. The mid's are the best I have ever owned. Close to the SDA 1's I had years back. Keep the sub on, really brings the sound fuller IMO. Just had to share. Back to the bat cave.