AKG K550MKIII Closed-Back Headphones - Good Working Condition - Retail Price ¥21,800

Used for approximately 1.5 years after purchasing new.
I really liked the comfort and sound, but I'm selling them because I got a higher-end model.
There are some signs of use, and the headset and earcup parts show deterioration. However, replacement parts can be purchased for around 2000 yen, so if you're concerned, you might want to replace them. This is a popular and highly reliable model that doesn't lose value, trading for around 15,000 yen on the used market.

There are no functional issues, but considering the deteriorated parts, I'd like to offer them at a lower price as is.

Recommended for everyone from classical music listeners who appreciate delicate sounds like an orchestra to club music users, as well as for listening and studio-level monitoring.
Retail price: 21,800 yen

Product Description from Official Website

The K550MKIII, which allows you to enjoy the exquisite balance between the closed-back sound isolation achieved by AKG® engineers and the wide, deep soundstage of open-air types, is a reference-class headphone that is useful both at home and on the go. It features our largest 50mm drivers, allowing you to enjoy powerful AKG sound with hi-fi systems and all portable devices. The large earcups and new headband design provide excellent fit and comfort. The 2D-Axis mechanism allows them to fold flat for convenient portability.

Specifications
Impedance: 32Ω
Sensitivity: 114dB SPL/V
Maximum Input Power: 200mW
Frequency Response: 12Hz–28kHz
Weight: 305g
Plug: 3.5/6.3mm jack