U will not get the full sound from ur speakers...try moderately priced high current high powered solid state. Nothing wrong with high powered Tubes, but they cost away too much. My suggest is to look into Adcom 5802, Classe over 200 watts, bryston 4b st, DNA, parsound 3500 etc.....with any electrostatic speakers, never enough high current power. better current better sound. My personal choice would be adcom and the classe to smooth out the rough edges in the highs and mids and make the sound more clear.
