Hate to say but you will never get what you are seeking with a change in speaker cables. Time to go back to solid state amp as others have implied or said. Save your hard earned money, sell what you have, and upgrade. Not saying SS is better. But for your situation, it may be better.
Recommendations for fast sounding cables
I've recently acquired a SEP amp based on kt88's and while it presents well in many ways it lacks the speed of my push-pull and ss amps which is typical. Thus I'm looking for some nice and well rounded sounding speaker cables (non-biwire) and interconnects (single-ended) that excel in speed, tempo, PRAT, whatever you wanna call it to try to get some of the head nodding and toe-tapping back.
Transparency, detail, open soundstage are basic requisites as well. I would also consider maybe changing out my
psu umbilical cord, usb, and digital coax. I understand that this will likely involve some or all silver in the makeup of the cables, and while I like a lit-up sound- an overly bright anything will usually get quickly replaced. The budget is not high at $100-$300 new or used but may make considerations for something exceptional that fits the bill. I've gathered that some of the following may work- please feel free to comment on those as well, but I would also like to get some more suggestions. Thanks!
Mapleshade Double Helix
DH Labs Silver Sonic T-14
Signal Cable Silver Resolution
Mapleshade Double Helix
DH Labs Silver Sonic T-14
Signal Cable Silver Resolution