Class D amps,bang for your buck ones

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.

I am a french audiophile,sorry for english mistakes..
I recently bought a SDS470 amp (supplied completed)from Classdaudio (590usd!...)
I have been totally surprised by the sound quality of this amp,which sound style is closer to tubed ones than to ss ones.
This amp is delivering 250w on 8ohm,500 on 4,and is deemed to deliver 1000w on 2ohm,according to the mfr.
Very pure and resolving sound,comparable to the best tube amps,plus no limits in dynamics,no distortion even on peak transients.
Exteme sensitivity to the other components of the system,necessity to work on cabless,interconnects,mains cable,mains filtering,position of plugs
etc to get the best,which can become at the highest level when
the system is optimized.
The interconnects and speaker cables must be chosen with low capacitance per meter,in order to favourize high frequencies(range 15 to 20khz),which is rather easy,then the resolution of details is at its best.
Two audiophile friends were so surprised when listening at home that they immediately purchased two amps.
The "big" amp mfrs,incl tubed ones,can be worried by the progress of such low cost solutions... sincerely mxt