Sony MDR-RF915RK 900 MHz RF Wireless Headphone System

Sony 900MHz RF Wireless Headphone System MDR-RF915RK
Sony 900MHz RF Wireless Headphone System MDR-RF915RK
Item# MDR-RF915RK

Product Description:

  • Wireless Design lets you move inside and outside your house and still enjoy music and TV sound, and lets you turn up the volume late at night without disturbing others
  • 150 Foot Transmission Range for listening enjoyment upstairs, downstairs, virtually everywhere in your home and outside in your backyard
  • 900MHz Radio Frequency (RF) Transmission provides better sound quality & greater
  • 30mm Diameter Driver Units are larger
  • Provides deeper bass, lower distortion & wider dynamic range
  • Low frequency response extends down to 20Hz
  • PET Diaphragms ensure high rigidity for excellent high-frequency response
  • Ferrite Magnets combine high energy and small size for ample sound output
  • Comfortable Open-Air Type Supra-Aural Headphones
    Fit securely for maximum frequency response
  • Double Headband w/ self-adjusting mechanism for perfect fit
  • Built-in Rechargeable Ni-Cad Batteries are more convenient than ordinary replaceable batteries, and when fully charged provide up to 23 hours of operating power
  • Easy Rechargeable Battery System automatically charges the headphones when placed onto the transmitter
  • 3 Transmission Channels Available helps ensure optimum signal reception; convenient sliding selector control on the side of the transmitter
  • Automatic Power On/Off for both headphones and transmitter conserves battery life; transmitter turns on when it senses an input signal; headphones turn on when you place them on your head
  • AFM Transmission System resists static and distortion for higher fidelity
  • Complete Kit supplied, includes transmitter, headphones, connecting cord, UniMatch® plug adapter and AC power supply
  • Supplied Connecting Cord goes directly to headphone output of your high fidelity system for easy connection to hi-fi system, TV or VCR


  • RF Modulation: Frequency modulation
  • RF Carrier Frequencies: Channel 1: 913.5 MHz, Channel 2: 914.0 MHz, Channel 3: 914.5 MHz
  • Effective Range: 150 feet


  • Power Requirements: AC 120Vm 60Hz when used with supplied AC power adapter (connects to the DC 9V jack)
  • Audio Input: Stereo L/R phono jacks, Supplied 3 ft. connecting cord goes from stereo mini plug to L/R phono plugs, Supplied UniMatch plug adapter converts stereo mini plug to stereo phono plug
  • Type: Open air, dynamic, wireless
  • Driver unit: 30mm diameter, dome type
  • Diaphragm: PET
  • Magnet: Ferrite
  • Headband: Double band, self-adjusting
  • Frequency Response: 20-20,000Hz
  • Power Requirements: Headphones: Ni-Cad battery, supplied, Transmitter: 9V AC with supplied adapter
  • Battery Life Approx: 23 hours with fully charged Ni-Cad battery (built-in)
  • Sensitivity: 105 dB/mW
  • Impedance: 24 ohms at 1 kHz
  • Tuning: Manual
  • Volume: Rotary control
  • Power Handling: Capacity 1000mW (IEC)
  • Weight: Headphones: 8 3/8 oz (240g) w/battery, Transmitter: 6 2/3 oz (190g)
  • Dimensions(WxHxD): Transmitter: 6" x 4 1/4" x 6"
    (150 x 108 x 150cm)