This document is the operating instructions for Sony MDR-7550 headphones, which introduces the features and usage methods of the headphones.
This manual covers the Sony MDR-7550 closed‑back, dynamic stereo headphones, describing their design, detachable cord, and interchangeable silicone earbuds. It explains how to wear the headphones, connect the cord, and adjust the earbuds for a secure fit.
The guide also lists technical specifications, supplied accessories, and important safety and maintenance precautions, helping users achieve optimal sound quality and long‑term durability.
| Type | Closed, dynamic |
|---|---|
| Driver unit | 16 mm, dome type (CCAW) |
| Power handling capacity | 500 mW (IEC*) |
| Impedance | 160 Ω at 1 kHz |
| Sensitivity | 108 dB/mW |
| Frequency response | 3 – 28 000 Hz |
| Cord length | 1.6 m (OFC Litz, detachable) |
| Plug type | Gold‑plated L‑shaped stereo mini plug |
| Mass | ≈ 7 g without cord |
Connect the blue cord jack to the left headphone and the red cord jack to the right headphone, then tighten each screw collar.
Remove the earbuds from the headphones and wash them with a mild detergent solution.