I purchased a pair of Source speakers on Monday from the original owner and I am very happy with my purchase. I am replacing a pair of Motion 12's which are excellent speakers in my opinion but wanting to take the plunge to ESL's. I am still working with placement as I have gotten allot of good advice from some people on a Facebook page for Martin Logan speakers and I feel I need to completely rearrange my listening room in order to get the best sound from them. As they are now I'm so impressed with the beautiful clarity of symbols and brass that I am experiencing. I have couple them with a Dynamo 1000W and the overall balance and dynamics are nothing short of breathtaking. Because of this very impressive sound it is egging me on to rearrange my room because I can't imagine how they will sound when given the appropriate listening area setup. Thank you Martin Logan for designing and making such an incredible product.