Overview

Pump up the volume and groove about your listening room as you enjoy music or TV soundtracks with Sony's MDR-IF540K Wireless Headphone System. This complete kit that includes a transmitter and headphones offers features like a Lightweight, open-air design, 30 mm drive units for deep bass, Automatic On/Off, and a Vibration Function (with level volume) for an exciting game and movie experience. Also utilize the Two Audio Inputs to accommodate audio and video sources, the Rechargeable Battery, Up to 45 Hours of Battery Life (optional alkaline battery), a Transmission Range up to 24 feet, and a Transmission Coverage angle up to 90°. The MDR-IF540K enables an easy connection to your home audio system, TV, PC or VCR. Hear the difference. 

Features

• Complete Kit Including Transmitter and Headphones 
• Lightweight, Open-Air Design 
• 30 Mm Drive Units for Deep Bass 
• Automatic On/Off For Transmitter and Headphones 
• Vibration Function (With Level Volume) For an Exciting Game and Movie Experience 
• Two Audio Inputs Accommodate Audio and Video Sources 
• Rechargeable Battery, Supplied 
• Up To 45 Hours of Battery Life (Optional Alkaline Battery) 
• Transmission Range Up To 24 Feet 
• Transmission Coverage Angle Up To 90° 
• Easy Connection to Home Audio System, TV, PC or VC 

Specifications

• Cordless design lets you move around the room and still enjoy music or TV sound tracks; lets you turn the volume up late at night -- without disturbing anyone else 
• Easy connection to TV, VCR and audio systems, through the supplied connecting cord and plug adapter 
• Light weight so you can wear them comfortably for hours on end 
• Open-air design lets you continue to hear ambient sound 
• High-power infrared transmitter incorporates multiple Light-Emitting Diodes (LEDs) for extended coverage range 
• 24 foot transmission range for listening enjoyment throughout the room; lets you sit back from the TV set and still enjoy TV sound 
• 30 mm diameter drive units are larger than many portable headphones for deeper bass, lower distortion and wider dynamic range; frequency response extends down to a low 18 Hz 
• Rechargeable battery (supplied) saves repeated trips to the store; automatically recharges when you place the headphones on the supplied transmitter 
• Up to 100 hours of battery life with optional AA alkaline battery; up to 30 hours life with supplied rechargeable NiCad battery 
• Complete kit including high-powered transmitter/recharger, headphones, rechargeable battery, connecting cable, UniMatch(r) plug adapter and AC power adapter 
• 90° transmission angle (maximum) for uninterrupted listening as you move around the room 
• PET diaphragms ensure high rigidity for minimum distortion; low mass for extended high-frequency response out to 22,000 Hz 
• Ferrite magnets combine high energy and small size, for ample sound output 
• Wide headband with a separate self-adjusting band conforms precisely to the curve of your head; stays comfortable, even after listening for hours on end 
• Mute function to avoid noise through the headphones; cuts out the sound when no audio signal is available 
• Automatic power switch for both the headphones and transmitter conserves battery life; when the transmitter senses an input signal, it turns on; the headphones turn on when you place them on your head 
• Single volume control in one earpiece conveniently adjusts the volume for both channels 
• Supplied connecting cord with Sony UniMatch® plug that goes to the headphone output of your high fidelity system, TV set or VCR; UniMatch system accommodates either the phone jack on high fidelity components or the minijack found on video components 
• Infrared wavelength: 880nm 
• Infrared Modulation: Frequency modulation 
• Infrared Carrier Frequencies: Right 2.8MHz, Left 2.3MHz 
Transmitter: 
• Power Requirements: AC 120V, 60Hz when used with supplied AC power adaptor, which connects to the DC 9V jack 
• Audio Input: Stereo L/R phono plugs; supplied 3-foot connecting cord goes from stereo mini plug or phone plug to L/R phono plugs 
• Effective Range: 24 feet (7m); 10 feet (3m) at ±45° 
• Power On/Off: Automatic On/Off switch 
Headphones: 
• Type: Open-air, Dynamic, Cordless 
• Drive Unit: 30mm 
• Diaphragm: PET 
• Magnet: Ferrite 
• Frequency Response: 18 - 22,000Hz 
• Power Requirements: DC 1.5V, 1 NiCad Rechargeable Battery (supplied) or 1 AA battery (optional) 
• Battery Life: Approx. 23 hours with supplied NiCad battery; approx. 45 hours with optional alkaline battery 
• Recharging Time: Approx. 24 hours 
• Weight: Headphones: 6.3 oz. (180 g), (including battery), Transmitter: 4.4 oz. (125g) 
• Supplied Accessories: Rechargeable NiCad Battery NC-AA-HJ, AC adapter, UniMatch plug adapter, Connecting cord