Hi, you have a wonderful pair of speakers. They are very rare & I too am lucky to own a pair. Many things have come & gone but the TDL Reference Monitors still have a special place, now relegated to front channels of my HT. The TDL Ref. monitors have huge potential. If you get a chance try auditioning them with a McIntosh amplifier. A MC252,MC352 or MC402 would be ideal. The other option is Class A amplifiers. I also liked the Plinius SA102.
I see that you like to improve on the imaging. Actually with my Supratek Chardonnay pre + MC352 + Tranparent speaker wires, this was one of their strong suits!!!
Enjoy!
P.S.- hope you have heard "Chinese Drums - Poems of Thunder" on them.