Has anybody tried using single solid core cables?

Solid core is all I use now. I make my own from home depot wire.

Actually last night I made some solid core 12 gauge romex power cords for my mono amps. I'm blown away at how much the sound improved. Super fast and tight, very detailed but natural, a lot more open and airy with a much better soundstage. Better bass. Everything was just so much nicer.

I already had solid core interconnects I made

So I decided today to change to stranded wire for my power cords. The solid core were way way to stiff.

However I went up a gauge. And made them a foot shorter. So they are now 10 gauge that I bought at home depot (14 feet for $25!!). Copper is copper.

The sound is better, more natural, and better imaging and depth, clarity. Basically everything rounded up a notch.

Pretty much wire thickness is king. Solid core is best but thicker gauged stranded can beat it out since it's got more conductive area. Which the 10 gauge does and sounds amazing. Another reason is I think the stranded gets a better connection when screwed down, it forms into the clamp better. And also the cord can bend and it's not tweaking and sits better in the outlets.

I've only gotten more clarity and detail with every upgrade
in gauge. But it becomes more natural and organic. It does
give you more body and bass. But people have designed their
system around cables that left that very last part of the
signal out or thin. So when it's added how it should be it's
to warm for them and to much. The solid thicker cable is
conducting better and getting the signal there more intact
and complete how it should. A system should be designed
around that complete full bodied signal. All electricity
cares about is getting to it's destination the quickest
easiest route with the least resistance. Do that and you
keep the signal the most complete.

Anyway, today I upgraded my interconnects. I hand made some
with 14 gauge solid core wire from Home depot. VERY thick
and heavy duty. Can barely budge it. It's kind of tough to
work with but well worth it. Everything I said above
applied, more detail, clarity, but with a more organic
natural feel to it.

I also upgraded my speaker wire. I can't handle solid core
for that. To stiff. To hard to get to lay down and look nice
too. So I got 10 gauge stranded with 4 wires in each. So
doubled up at the spades on each end. It pretty much equals
an 8 gauge now I believe. I used solid copper spades and
solid copper banana plugs (with no coating, just solid
copper). These ends are awesome. Found them online. Brass is
horrible to use. It's something like %25 as conductive as
copper. It's like the signal hits a brick wall when it hits
brass.

Same thing, more natural, more full, more clarity, more
detail (but organic and real). The soundstage at this point
is incredibly large and deep and dynamic. Can hear so much
of the room it's in, where recordings were made. I can hear
the traffic outside of a closed room in one. I can hear a
guy saying to turn the mic up behind the glass in the
control room in a Metallica song. I've had thousands of
dollars of cable and these hand made cables that cost me
less than $300 would play with all the big boys. I'm blown
away I can get this out of my system.

You can build your own speakers at a fraction of the cost or
retail and get the same sound or better, no reason you can't
do it with wires and cords. Just takes your time.

I have some better speakers on the way. LSA Statements, I'll
let you know how everything plays with it.

What happened to the OP? Did you try anything yet?