Definitely biwire. I use Pure Silver Connection R50 cables from Australia with my SL3s and a Cary V12 tube amp. Very revealing cables. I can hear vocalists lips part when they sing. If you are interested in demoing a pair, e-mail me and I will give you the name and e-mail of a dealer in L.A.
I have also heard the Transparent cables are a good match with electrostats, but have not heard so don't have first hand knowledge. Good luck.
I have also heard the Transparent cables are a good match with electrostats, but have not heard so don't have first hand knowledge. Good luck.