Just added this to my test songs playlist.

Totally agreed with this. There's way too much going on.

Absolutely no idea. Never heard of it.

You just need an amp and a DAC or a combo amp/DAC (all-in-one amp w/ DAC built in). You shouldn't need a separate pre-amp to drive the 58X whatsoever. The idea is to make sure you can drive the headphones properly. Basically, this means that your getting a satisfying amount of volume out of them without needing to turn the volume dial all the way up (if you need to do that, then you're not getting enough power). The 58X should not need anything fancy/expensive (relatively) to drive them/make them sound good.

Edit: since you already have a FiiO K1 DAC, and the Suca Audio looks like a tube amp, that should be more than sufficient. Are you saying you're not satisfied with the amount of volume the Suca amp provides?

Edit 2: Is that Suca a pre amp? You should be using a regular amp instead of just a pre amp I believe.

Edit 3: The more I look at the Suca amp, the more I want to suggest investing in something that will provide a better, more effective listening experience. Again, you don't have to spend a lot of money to do this, but a $50 mini tube amp probably isn't going to provide you with the best that the 58X can offer. From the reviews on Amazon, people are saying that it lacks a ton of detail. Maybe look at Topping, SMSL, JDL Labs, Schiit, etc. for something that will allow your headphones to display the amount of detail and volume they're capable of. There are plenty of amps from those companies that are in the $100-$200 range.

I'm not the most knowledgeable on DACs, per se. I went from a cheap Syba Sonic (now Best Connectivity) amp/DAC combo to a Schiit Modius after a few years. Now I'm using a Schiit Bifrost 2. Other people on here might be better suited to telling you what to upgrade to, while still others will tell you that all DACs sound the same and there's no point (jUsT gEt aN aPpLe dOnGLe).

As it stands, I'm looking into an upgrade for my Darkvoice tube amp next since I love what tubes do to my HD 800S. I'm eyeing the WA7 Fireflies 3rd gen, which is a tube amp that just also happens to have a built in DAC and pre-amp. I know even less about pre-amps; never used them as far as I've been aware.

I guess you could go the Topping route. They seem to get a lot of praise for their stuff. Like a D30 or D90 or whatever.

Oh my god! All hail the Audiophile King! How dare the OP deign to comment on headphones! That puny, average consoooomer. Disgusting, vile creature infecting our King's sensibilities. Be gone, average consumer!

In all seriousness, though, get a life /u/swaggod5. Not very 'swag' of you to shit on, well, anyone in general.

The 58X is my favorite headphone that I have under $200. I've since moved on to the HD 800S as my daily driver, but I use the 58X for playing electric guitar through my Line 6 Helix. No other headphone I have makes my guitars sound as real as the 58X does. If I had to sell all of my headphones and keep just one on a desert island, it'd probably be the 58X.

You need to lower the gain below '0' whenever you raise any of the bass frequencies/sliders. Also, you need to set the proper bass/sub bass frequencies in order to reveal the proper type/amount of bass. My LCD-X's that are hooked up to my amp/DAC stack from my PC sound incredible and have the best bass of the cans I've acquired so far.

Edit: here's a snippet of my Equalizer APO settings. https://imgur.com/a/TO1vHEo They're based on oratory1990's recommended settings with the bass frequencies adjusted to taste. My LCD-X absolutely slams. You'll notice that my Pre Amplifying setting is set to -9.5 (top-left corner). This is to compensate for the gain increase introduced by raising any of the frequencies below above 0. If I didn't do that, then it would clip and possibly sound like a blown out subwoofer.

Edit 2: Here's a link to all of oratory1990's presets that pretty much run the gamut of most of the headphones we know, love and/or hate: https://www.reddit.com/r/oratory1990/wiki/index/list_of_presets I used the LCD-X 2021 revision settings to tune my EQ. It takes some figuring out as there's a bit of a learning curve, but it's worth it.