Thank you Chris and Mark for your comments.

Amplifier is driving a pair of Definitive Technology Mythos ST SuperTower (Floor-standing ultra-performance loudspeaker with built-in powered subwoofers).

Sensitivity :93 dB
Internal Subwoofer Amplifier Power :300 watts

Room dimensions are ~ 20' x 22' x 12' high.

Since speakers include subwoofer amplifier, I would agree with both of you that I am not driving amplifier hard.

Rest of system is 508.20 and 541.

Would still like to remove top glass cover and take look at the beautiful craftsmanship. Any guidance or hints would be gladly appreciated.


200, 500, 501, 504, 505, 506.20, 508.20, 508.24, 541, 551, 555, 556, 557, 561, G55 and Allison IC-20