Dear fellows. I'm planning to substitute all electrolytic caps of my Sansui AU Alpha 707MR. Since it uses discontinued Elna Silmic caps (1st version), I'm in doubt between using Elna Silmic II or NIchicon ones to replace them... My fear is that the sound of the amplifier is changed too much, especially sounding "lean"... There is a technician in Japan who only uses Nichicon caps on Sansui alpha restorations. He uses Nichicon FG Fine Gold and Nichicon KZ Muse caps at the circuit and power supply boards. And in place of the original Silmic "back-to-back' pairs, he uses one bipolar Nichicon Muse ES type. (See here: http://amp8.com/sansui/707/a707kx.htm ) So, what do you suggest? Elna Silmic II or Nichicon? PS: I'll use Nichicon Super Through for the big reservoir caps.