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
auralacrobatics
it can lean toward the bright, edgy end of things.


I use silver cables & they don't sound "bright" or "edgy".
I'd like a recommendation for cables that make Johnny Cash sound like Hip-Hop.  Just can't get there.  

Point being, I can see cables affecting tone.  But the speed of light is what it is.  The closest you could get would be whatever frequency range you associate with "fast" could be emphasized. 
Cables will not speed up your system plain and simple.

In terms of a what a good cable will offer - more inner detail, air, extension, tone, and dynamics - NOT transient speed. That said - I’m a big believer in silver cables. I use audiosensibility signature line.

Your digital front end is where you need to focus - the DAC and streamer/transport are absolutely critical for transient fidelity and speed/timing (PRAT). This is where you should be focusing.

The major characteristics of digital as you move up the chain are in regards to timing, and jitter. This means : transients, PRAT, staging, imaging and detail. Simple changes like using the i2s input of a DAC will help in this regard. The power supply to your digital gear is very important as well. 

This is how you will be able to optimize around your amp (assuming it can ever be "quick" enough for your needs)