How come there is no thread on the RealityCheck?

Norm- glad we agree on two out of three. Sometime you should try a Aberdeen(mauimods.com) modified TacT RCS.

Where can one purchase Nespa?

I think many buy directly from SOS, but I bought mine from Ambience Audio in Conn.

I bought the first TACT digital amp, but have never had their digital equalizing. I have heard it in others' rooms. Somehow I just don't like what I hear, but I may be lucky to have a good room.

RealityCheck has a new cd treatment, actually two. UltraBit and UltraBit Gold are a single application treatment for fresh cds and cd-rs. I have tried both on both the originals and on cd-rs that were copied with the RC duplicator. I never liked the RealDisc cleaner, but the UltraBit Gold is both easier and better than the old ClearDisc and ClearBit treatments.

I have found that although UltraBit is also an improvement UltraBit Gold which is somewhat more expensive proves clearly superior. I have also found that cleaning the original is a big improvement especially if followed by using the Nespa, but that duplicating the original after those treatments on to a cd-r that has been treated with UltraBit Gold and then Nespaing the copy, gives a much more precise and realistic soundstage and the best dynamics and drive to the music.

I have thus far redone 12 of the original RC copies that I have with the new procedure and plan to do the remaining 55 as soon as I can.

Tvad, I know, and I think I am crazy, but the Nespa, the RealityCheck, and now the UltraBit Gold have been substantial improvements. I am afraid, however, that comparing the UltraBit with the Nano 8500 is a bridge too far for me.