Sony MDR-RF985RK User manual

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-delity 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 )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.
Specications
Audio
Audio Modes Mute: Operates when RF signal is weak or not received
Channel Selection Select by a slide switch
Driver Unit 40 mm
Eective Range Approximately 150 feet (45 m)
Frequency Response 10-22000 Hz
Transmitter Ch1: 915.5 MHz, Ch2: 916.0 MHz, Ch3: 916.5 MHz [selective, FM Stereo
Tuning Manual tuning via switch on both base and headphones
Volume Control Yes (Rotary)
General
Design Over-the-head, Home-music/movie/games
Diaphragm PET
Headband Wide, Easy-Adjust
Magnet Ferrite
Power On/O Power turns ON when headphones are worn; Red LED illuminates
Type of Use Home
Hardware
Communication Wireless Analog 900 mHz Radio Frequency
Headphone Type Closed, Dynamic
Inputs and Outputs
Audio In Analog Phono Input (le/right), Analog Stereo Input mini jack (x1)
MDR-RF985RK 900 MHz Analog RF wireless headphone

1. Actual battery life will vary based on product settings, usage patterns, battery and
environmental conditions.
©2008 Sony Electronics Inc.
Sony is a trademark of Sony. All other trademarks are property of their respective owners.
Features and specications are subject to change without notice. Non-metric weights and
measures are approximate and may vary. /Updated: September 25, 2012
Power
Battery Charging (Approx) 16H (to fully charge an empty battery); Battery is charged by placing MDR on TMR
Battery Life (Approx) 18H (with fully charged supplied NiMH battery pack); 28H (with AAA type alkaline
battery)
Battery Type Rechargeable Ni-MH battery pack (supplied); AAA x2(not supplied)
Internal Power Supply Transmitter: Supplied AC adapter (12V,200mA)
Output Power 5mW + 5mW
Power Requirements Rechargeable nickel-metal hydride battery (supplied) or commercially available (size
AAA) alkaline batteries
Weights and Measurements
Cord Length (Approx.) Cord Length (Approx.): 39 3/8 in. (1.0 m) Stereo connecting cable
Dimensions (Approx.) Transmitter: 8 5/8 x 4 1/4 x 3 7/8 in. (216 x 105 x 96 mm)
Weight (Approx.) Headphones: Approximately 10.59 oz. (300 grams) Including supplied battery
Transmitter: Approximately 7.7 oz. (220 grams)