Superlux HD-660 Pro 150 Ohms

I previously owned the Superlux HD-660, and I wanted another pair, but they were discontinued. Until I discovered that THESE (the 660 pro) dropped. I ordered immediately to see what they're all about.

These are more of a middle ground for recording/mixing, since they have a tiny bit more bleed.
But the pay-off is big. You can wear these for hours and feel zero irritation. Very soft and cozy feeling on the ear.
They're a tad bit brighter, but they also respond a bit better at the sub-bass frequencies. And also, the original 660s were also giving me a bit too much around the 600-1000hz area, whereas these don't. So, you could say these are a bit more V-Shaped, in comparison.

I enjoy listening to these more, and wearing them for longer hours too. And they're absolutely fine for recording too. The bleed levels are STILL comparable even to the DT-770s.

If you don't wanna spend much and still get a comfortable, great &bright sounding pair of headphones, look no further :)

I bought these as well as the t.bone HD 815 headphones which are in a very similar price bracket. I also own a pair of Beyerdynamic DT770 Pros that are about three times the price! These are clearly trying to copy the Beyerdynamics in design.

Sound quality: They're pretty decent, especially for tracking. They don't have much sub-bass reproduction, so they miss a bit of punch compared to both the other two. They are quite bright though, with lots of clarity in the high end. Sometimes it's a bit much, with the sound coming across a little bit brittle and harsh in some situations. The soundstage is wider than the t.bones, but nowhere near as expansive and detailed as the beyerdynamics. They work well for classical especially, but they're pretty decent for everything unless you want loads of punch out of your basslines. The sound isolation is as good as the beyerdynamics.

Build: Mostly great for the price. All the materials feel good quality and robust. I think the cable feels a little flimsy, I suspect the actual conductors inside the cable are very thin, which might lead to durability issues if these get shoved inside a bag regularly. There's a couple of hard edges on the pieces that connect the headband to the speakers, but the biggest complaint is the shiny plastic on the lower half of each speaker enclosure: it feels fine, but looks cheap and is an absolute fingerprint magnet. It's a really annoying feature of an otherwise well designed pair of headphones.

Comfort: Nearly as good as the beyerdynamics, which are the most comfortable pair of headphones I have ever worn. Absolutely no complaints here, you could wear these for a long time and not have any complaints.

Overall: A decent pair of headphones, which if you prefer an analytical sound that borders on harsh over a somewhat muddy sound would be a good choice over the t.bones.

Pros:
To answer the question I had myself, will you need a preamp for this? The answer is 100% NO. On b450 motherboard there is plenty of volume for music and it can be really loud at maximum volume. Same goes for my Android device, plugged in and has no issues listening to music without even touching more then 50% of volume. Don't have 32 Ohm version to compare this, but likely even if you don't own a preamp you just wanna get the 150 ohm version anyways for w/e you do. On PC this are running 20/100% volume.
10/10 comfort, love the pads and size. Can sit all day in this. Default pads are likely 20% of the price here.
Sound is flat/clean. If you need bass etc, then there is none here at all and for you this should be 100% skip.
Long cable.

Cons:
Nonreplicable cable.
Faux leather. Max 5 years of use for this stuff.
Sides of cnc metal is unpolished, sharp, will you harm yourself? I guess if drunk can get a cut otherwise not really.
Cables between headphones and the top band will likely last 5-7 years max before dying as the cable is thin and poorly protected.

Overall, might not be the stuff for professional use outside of vocals, but otherwise great value for money considering the amount of comfort you get using this.