Need some experienced ears to grow my system

CURRENT-
Sources: Computer w/ M-AUDIO FIREWIRE 410 I/O
Panasonic 3800 DAT
(using Audio Magic Presto II digital cable (spdif)
plus cheap toslink)
Musical Fidelity CD PRE 24

PRE: Musical Fidelity CD PRE 24
(using Audio Magic Excaliber II IC's split at amp-ouch!)

AMP: Adcom GFA-555
(using old Audio Magic Excaliber or Sorcerer wires)

Speaks: B&W CDM9-NT

SUB: Velodyne Servo FSX_12