SONY Wireless Stereo Headphone System (MDRRF925RK)


  • 40mm Drivers
  • Volume Control on Ear Piece
  • 46m Transmission Range
  • Neodymium Magnets

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Audio Modes Mute: Operates when RF signal is weak or not received
Channel Selection Select by a slide switch
Driver Unit 40mm
Effective Range Approximately 150 feet (46 m)
Frequency Response 20-20,000Hz
Transmitter Ch1: 915.5MHz, Ch2: 916.0MHz, Ch3: 916.5MHz [selective, FM Stereo
Volume Control Yes (Rotary)
Design Over-the-head, Home-music/movie/games
Diaphragm PET
Headband Wide, Self-Adjusting
Magnet Ferrite
Plug UniMatch® Adapter
Power On/Off Power turns ON when headphones are worn; Red LED illuminates
Type of Use Home
Communication Wireless Analog 900mHz Radio Frequency
Headphone Type Closed, Dynamic
Inputs and Outputs
Audio In Analog Phono Input (left/right), Analog Stereo Input mini jack (x1)
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
Tuning Manual tuning via switch on both base and headphones
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)

Additional information

Detailed Specifications



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