I've had VMPS RM40 ribbon speakers that are highly detailed and transparent. I went the same route as you seem to be going. Changed to Teo Game Changer II ICs. Then went to double Teo GCII ICs. Each change brought more organic sound and more beautiful. The double ICs are simply freakin' awesome. They WILL change your mid about the importance of cables in the system. It is as big a change as a major component upgrade. Lastly, I went to Cerious Technology Graphene Extreme speaker cables. It took the sound a little further in the same direction. On all the wires, I had silver wires from Darwin and Amadi on all the ICs and SCs prior to this. They were much better in all ways than several different cables I had used previously. Cerious has now come out with the Matrix version of the CTGE speakers cables that is even better as all frequencies, but it is now silver wired--that MAY be a problem in your system. By the way, I have Nuforce Ref 9 V3 SE mono amps that are Class D and sound beautiful in the system. They have the TDSS level 3 upgrades done to them.