Class D amps,bang for your buck ones

I built a Hypex UCD400HG with HxR and with transformers (not SMPS), Neotech solid core wire, upgraded connectors, etc. Stunningly good. Replaced my Berning ZH270.

It took hundreds of hours to reach the peak that I am experiencing now, but I can't imagine it getting any better.

I want a Wyred preamp but can't bring myself to shell out that kind of dough.....I'm really curious too.
This ST-250 is the most impressive amp I have ever had, the last time I was so impressed with sonics is when I went from NAD to Accuphase. The look of the amp is kind of neither here nor there for me personally. But, to each his own, my systems is now getting very good, to the point where this is close to where I want to end up. I'm changing out my speaker cable to some Virtue stuff so we shall see if that gives me anymore gains...

I'm really enjoying my system more than ever and I'm VERY happy I tried this Wyred amp. I also want to get a Eastern Electric minimax DAC to use instead of my Arcam CD192 player.
The Arcam is very good and has done well at stepping up to the Wyred amps sonic upgrade, but I think something like the Minimax would even make the sound better!

I doubt that I will ever change out the W4S as it is at the top limit of my budget for an amp and preamp. The wife is somewhat understanding but I think that I have about run out of rope on that score.

How does the Cary CAI-1 integrated or the CAP-1/CAA-1 pre/power digital amps compare to the PS Audio and W4S? They all seem similar.

I put an inexpensive Emotiva power cord on the Wyred amp and was not expecting much, but thing did improve considerably. The sound became more open. A cheap gain.