I had a pair of 2SW-1's for a two week audition in my home back in December 1979. They were beautiful in Brazilian Rosewood. They sounded wonderful as long as you did not play something with a lot of dynamic range at a loud level, like at that time a Direct-to-disc record. The result was a very unpleasant distorted sound. The problem was the mylar hitting the polarizing plates due to the dynamics of the signal in conjuction with a high gain on the preamp. The spacing between the mylar and the fixed plates is critical in electrostatic loudspeaker design. I wrote Harold Beveridge a letter about my findings and his VP at the time, John Fermin, wrote me a very nice response stating my observations were correct and they were working on overcoming this. I don't know if they ever did or not. These speakers with the two subwoofers also in Rosewood were $8,000 in 1979. A bargain compared to the $44,000 price for a new pair today.