I'm selling a pair of AKG N90Q Gold.
They are new with some of the seals still on them. Fully package with all the accesories. I bought them because I wanted to have a pair of noise cancellation headphones, but unfortunately it wasn't the right time and I need to sell them now.
The headphones have no issue whatsoever and I can provide more photos.
In terms of sound quality, I would say they are the most complete package under 600 euro coming with a DAC, noise cancellation feature, a good soundstage.