Ah, SCIENCE!
A glitch in the listening tests:
http://audioheritage.org/vbulletin/showthread.php?p=164709#post164709
Compensation filter for BMS 4550 was not properly connected.
A glitch in the listening tests:
http://audioheritage.org/vbulletin/showthread.php?p=164709#post164709
Compensation filter for BMS 4550 was not properly connected.
