Sony MDR-RF985RK Specifications

MDR-RF985RK
Untangle your mind and relax with crisp, personal audio without wires.
They also feature a comfortable headband and long battery life up to 25
hours. Best of all, one simple setup is all it takes to achieve optimal RF signal
reception and you're on your way to cordless freedom.
Cordless Headphones
Enjoy high-fidelity sound, at home, in wireless freedom.
Long-term comfort
The easy-adjust headband allows for long-term comfort and ease-of-use.
Expressive sound
40mm drivers deliver deeper bass and audio clarity for a superior home entertainment
experience.
Quality sound
Wireless radio-frequency transmission provides quality indoor transmission. (Up to approximately
150 ft)¹
Fast charging
Quick charging your headphones is a breeze with the secure charging system. A 3.5 hour charge
will produce a full charge of approximately 25 hours. recharge function.
Specifications
Audio
Audio Modes
Channel Selection
Driver Unit
Effective Range
Frequency Response
Transmitter
Tuning
Volume Control
General
Design
Diaphragm
Headband
Magnet
Power On/Off
Type of Use
Hardware
Communication
Headphone Type
Inputs and Outputs
Audio In
900 MHz Analog RF wireless headphone
Mute: Operates when RF signal is weak or not received
Select by a slide switch
40 mm
Approximately 150 feet (45 m)
10-22000 Hz
Ch1: 915.5 MHz, Ch2: 916.0 MHz, Ch3: 916.5 MHz [selective, FM Stereo
Manual tuning via switch on both base and headphones
Yes (Rotary)
Over-the-head, Home-music/movie/games
PET
Wide, Easy-Adjust
Ferrite
Power turns ON when headphones are worn; Red LED illuminates
Home
Wireless Analog 900 mHz Radio Frequency
Closed, Dynamic
Analog Phono Input (left/right), Analog Stereo Input mini jack (x1)