I have audio aero capitole mk2 cd player , direct in my amplifier, I have tryied 3 pre amplifiers before - Audio research reference 3, audiopax model 5 and gamut d3, the AR ref 3 was a little better than the preamplifier that comes with cdplayer , the others did not add nothing, but I think in buy another cd player with SACD so I will need one preamplifier,my list became small: joule 150 mk2, wyetech opal or pearl, supratek . But now there is a MBL dealer in my country , what about the MBL preamplifiers 6011D or 5011.