I use the relatively inexpensive Terminator Series ICs.
Even these can work some magic to help tighten up and clarify a system.
I've liked them better with more recent tube gear I've added than I did with older SS.
I also use DNM Reson (warmer, more British and refined presenation)and Harmonic Technology Truthlink (very transparent and neutral) and Audioquest CV6 speaker cables with the DBS gadget (rock solid).
Even these can work some magic to help tighten up and clarify a system.
I've liked them better with more recent tube gear I've added than I did with older SS.
I also use DNM Reson (warmer, more British and refined presenation)and Harmonic Technology Truthlink (very transparent and neutral) and Audioquest CV6 speaker cables with the DBS gadget (rock solid).