the t.bone HP 66

I've got these as a part of the Yamaha E353 deluxe package and I have used them with the Yamaha.

Pros: The sound is excellent, very clear. The ends turn 90 degrees, hence finding a position which is comfy will be easy. I'm using them mostly on the keyboard as piano and the lows are clear enough.

Cons: They sit somehow artificial on the ears and they have the '90s feeling. This will not be an issue, as the sound is great and the ends are soft, but might have this feeling.

They arrive with the 6.3 adapter which is welcomed as these can be used on a keyboard or on any other device (smartphones, etc..)

I would recommend them for amateur use for someone who wishes to have few headphones pairs around the place at a low budget range.

I would not recommend them for professional use as I never had professional headphones before to compare, but they might be fine. Probably another member will be able to provide this comparison.

The headset came in a bundle with my Yamaha Keyboard. Very light and comfortable (if you have a big head). Long and very sturdy cable. The adaptor from 3,5 to 6,3 mm it’s a welcome bonus.
Now, about the sound... great for keyboard, bright medium and clear high frequencies. The bass it’s there but the headset it’s not for HIFI systems. So, price/quality very high if you understand the purpose of the headset.
For music enthusiasts, you can find on Thomann website headsets from: Sennheiser, AKG, Sony. And you will still find people complaining about the quality of a 300+ Euro headset :)

Amazing headphones!
Inexpensive, but the quality is 10 times better.
It was in them that I heard the characteristic overtones of my bass cabinet, which I hear in the studio when I play live.
So I put headphones ten times the price on the shelf and use these. Ideal for home practice: lightweight, one long wire on the left. I will buy them with every new purchase, I need these in stock.
You read a lot in the reviews, but these headphones are too cheap to refuse to test them, so buy them and most likely you will not need others to play on the couch.
A small drawback: they fit unevenly to the ears, they were made for special skulls))