Thank you for viewing. This is an introduction to the ATH-PRO5MK2, high-sensitivity headphones for DJs, equipped with 44mm drivers. I purchased these but barely used them, and they have been stored for a long time. Although they have hardly been used, there may be some age-related changes. However, I didn't notice any deterioration upon visual inspection. The sound output also seems normal to my hearing. Perhaps they are now a respectable piece of vintage audio. Please prioritize the photos and purchase if you understand the nature of flea market transactions. Due to the large size of the item, shipping costs are significant. Thank you for your understanding. - Model Name: ATH-PRO5MK2 - Brand: audio-technica - Driver Size: 44mm - Impedance: 32Ω - Frequency Response: 5Hz - 40kHz - Sensitivity: 102dB/mW - Cable Type: Coil Cable - Connector: 3.5mm Stereo Mini Plug