Wkjeffers, lots of amps will be good or bad depending on impedance, and because the SL3s go down to 1 ohm, they will test a lot of amps. Having used an amp which could deal with it on my SL3s and an amp which couldn't, I highly recommend amps which can!
I did not own one but I tested one before making the decision to go with big power tubes and I can recommend the Innersound ESL amplifier. I also liked the way Counterpoint hybrid/FET designs sounded with the SL3s.
I did not own one but I tested one before making the decision to go with big power tubes and I can recommend the Innersound ESL amplifier. I also liked the way Counterpoint hybrid/FET designs sounded with the SL3s.