hddg:
Congratulations on your wonderful speakers. I do hope you are using an audio grade A/C wall outlet and audio grade fuses in your preamp and amp. I am impressed with and use the Synergistic Research Black outlets and their Black equipment fuses.
Audio Magic by reports also makes a very nice sounding fuse that is damped with beeswax.
The Synergistic Research products are sold with an excellent 30 day return policy.
I do know my horn system and my Terasonic speakers have both really responded to upgraded wall outlets and fuses.
David Pritchard