Where next from gamut d200i?

I would keep the Gamut amp.

While it can be difficult to demo, working with a local dealer can be helpful, and some provide demo units you can hear in your home.

Another way to try some tube preamps is buy and try. I have bought two or three used items, done a comparison, kept the one I preferred, and sold the others. It is more capital intensive, but if you buy at a good price point the cost is minimal

Thanks, sounds like a good idea, I do have an opportunity to buy a used prima Luna evo400 preamp at a reasonable price, like you suggest could buy and sell on if I don’t like. 

Just to add, my local dealer is excellent, but they have become a little more limited in the brands they offer. I have home demoed the latest chord ultima power amp, technically very good, fast and articulate, but just not for me, flatter soundstage in my setup and a little too analytical for my tastes. 

It's my opinion that a top flight preamp could improve the sound of your already excellent system.  I see that you are using CDs as your source, so have you considered a streaming device.  You could go with either a stand alone unit or one built in to a preamp or integrated.  As an alternative you could keep everything as is and buy 500-1,000 new CDs.  That's a few years of serious listening.  Good luck!

Thank you.
 

I do have an antipodes cx and ex streaming setup, with all the other paraphernalia, network switch Ethernet cables etc, but I prefer my cd transport, just personal taste, I know plenty people who swear by a sever/streaming 

any recommendations regarding a preamp?