Considering A SS amplifier

@millercarbon

I have owned plenty of tube amps and pre amps over my 30÷ years in this hobby. Spent a decade enjoying SET based systems. I find tubes no longer speak ro me in terms of how I enjoy music. My preference. Of course speakers define what amplification is going to be the best choice. Currently use a pair of JBL 4365.

@neonknight 
So far I have used it with the matching BHK Signature pre amp, along with one from Edge, and a passive from Placette Audio. So far I prefer tbe Halcro. Also ran a dozen tube chouces through it and the Telwfunken work best. Cables from Wireworld, Tara Labs, VH Audio, and Analysis Plus Silver Apex work the best. Power cords from PI Audio Group, Wireworld, Analysis Plus. PS Audio, and ZU Audio.

The amp sounds good, but just too soft around the edges foe me.

Well, you certainly gave it quite a chance, all the preamps and even AP Silvers you tried - was gonna mention those but you already did that. PS does offer a tad more laid back sound and presentation IMO. You tried a lot more than most do to find synergy.  Not for your ears and preference maybe.  Best of Luck on the next steps.    

@decooney 

The only other consideration I got is speaker wire. Use Wireworld Eclipse Series 8. But need an 8 meter run so thats not a cheap test as I cannot find a run of that length on the used market
 

@neonknight , 
8 meters is a long run and might be the cause of your issues.
In your case, I would recommend some Audioquest speaker cables with DBS. Used Rocket 88, Rockefeller, or GO-4 isn't too expensive (relatively) and you might just score some on Hifi shark.
Is it possible to move your speakers closer? I have some cables I could lend you.
Bob

@neonknight
The only other consideration I got is speaker wire. Use Wireworld Eclipse Series 8. But need an 8 meter run so thats not a cheap test as I cannot find a run of that length on the used market.

8M is quite a run IF your PSA/BHK amp is already on the side of "soft" sounding. Rule of thumb to keep "speaker wires as short as possible" for home hi-fi, in general terms. Agree with gndrbob. Might be a culprit, or enough so to round things out a bit. A few questions.

1) I see those WW ES8s are OCC, "9AWG", are they standard or quad (bi-wire) speaker cables?

2) For a brief 1hr test, can you maybe move the speakers super close to the amp?

TEST:
Before you do, warm up amp, play a familiar track. Index volume at 10, 11 o’clock or whatever your normal listening level is. Make notes on what you hear with highs, mids, lows level of detail. Then power off, swap out speaker cables for super short runs.

Simple, cheap and crude test, won’t sound great, but this will confirm it quick. Go to Home Depot, get some wire to cut. Some use regular orange AC extension cords and cut them in half and strip.   Or locate the infamous 18/2 or 16/2 Brown Lamp cord (just for the test). Cut them at 4-6’ max length. Single or Dual-run cords if you can bi-wire. Move speakers close, 4-6’ from amp, 4ft better. Twist bare wire connect with no connectors if you have screw-in terminals with holes or wrap/pinch well - if doable.. Any difference, at all? Brighter, but grainy? Listen for louder volume output at same 10’oclock volume level, louder? Make notes, report back. Worth trying, cheap to do a quick test before buying other amps.