This is the AKG Q701. It's the model with the Quincy Jones logo on the headband instead of AKG. There are no issues with the sound. Compared to the K701 and K702, the bass is a bit stronger, which balances the overall sound. On the other hand, the piercing, sparkling high frequencies unique to the K701 seem to be slightly subdued, which I personally find a little lacking. However, I think the Q701 generally sounds better. The rubber band (the common point of degradation in this series) is loose, so please replace it if necessary. It can still be used as is. The ear pads were replaced last month and are almost new. There are scratches, stains, and yellowing overall due to aging. Please understand that this is a used item before purchasing. Everything in the photos is included. That is, the main unit, the green cable, and the 3.5mm to 6.5mm adapter plug. Thank you.