Sony MDR-IF245RK (MDRIF245) Wireless Headphones

On-Ear Wireless Stereo IF Headphones


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Listen or watch whatever you want, as loud as you like, while keeping it all to yourself. Enjoy rich, powerful sound thanks to 40mm driver units working in perfect unison with a noise reduction system to provide crystal clear audio. And you're now free to roam within 26' of your TV or sound system without tripping over cords or finding yourself tangled up on some piece of furniture. Self-adjusting headband provides an extremely comfortable listening experience while the included rechargeable battery delivers up to 28 hours of battery life and fast recharge functionality.

General Features:

  • On-Ear Wireless Stereo IF Headphones
  • Over-ear design
  • Large 40mm speaker driver produces amazingly clear sound
  • Effective Range: Approximately 33 feet (10 m)
  • Quickly charging your headphones is a breeze with the secure charging system
  • Wireless radio-frequency transmission provides quality indoor transmission
  • Provides an ear-conscious design for long-lasting listening comfort
  • Soft and comfortable earpads with 40mm driver units
  • Tangle-free cable for convenient listening
  • Adjustable headband for comfortable listening sessions
  • Designed with a snug fit for active people
  • Nickel-plated, corrosion-resistant stereo jack
  • 1-year Manufacturer's Warranty

Product Specifications:

  • Frequency Response: 10-24,000 Hz
  • Sensitivity: 100 dB
  • Nominal Impedance: 70 Ohms
  • Cord Length: 39-3/8 in. (1.0 m)
  • Speaker Diameter: 40mm
  • Max Input Power: 1500mW

Product History:

Sony MDR-IF245RK thumbnail
(newest, current model)
Sony MDR-IF240RK thumbnail
(previous model, replaced by Sony MDR-IF245RK (MDRIF245) Wireless Headphones)

Sonic Electronix Insights (Scale from 1-5, 5 Being the Best)

Comfort & Ergonomics
Rates how comfortable the headphones are, taking into account build quality and materials used. Judged on a scale of 1 to 5 with 1 being uncomfortable and 5 being so comfortable you could sleep while wearing them.
Overall Audio Quality
Overall rating of how well the headphones perform with 1 being an unimpressive audio quality and 5 being the absolute best.
Hip-Hop, Rap, EDM, Dubstep & Pop Optimized
How well the headphones perform for hip-hop, rap, EDM, dubstep and pop music genres with 1 being not recommended and 5 representing headphones that were designed with these specific genres in mind.
Rock & Alternative Optimized
How well the headphones perform for rock and alternative genres with 1 being not recommended and 5 representing headphones that were designed with these specific genres in mind.
Instrumental & Classical Optimized
How well the headphones perform for instrumental and classical music genres with 1 being not recommended and 5 representing headphones that were designed with these specific genres in mind.
Optimized for All Genres
Rates how well the headphones perform for all music genres with 1 being not recommended and 5 being top-of-the-line music reproduction.
Build Quality
Overall Construction quality of the headphones. This rates on a scale of 1 to 5 the overall construction quality of the headphones with 1 being the poorest quality and 5 being as close to indestructible as a pair of headphones can get.
Overall design of the headphones. This rates on a scale of 1 to 5 the overall design of the headphones, including construction, sound quality and accessories with 1 being the lowest and 5 being top-of-the-line.
Rated on a scale of 1 to 5 with 1 being no isolation and 5 being complete isolation, this gives you an idea of how well the headphones seal your ears from your surrounding environment.
Value refers to the quality of headphones (how they sound, how they're built, etc.) for the price.

Sound Signature

Sound Staging & Imaging
Sound Staging and Imaging refers to the ability of a pair of headphones to create the placement of instruments and vocalists in a recording. A small sound stage is very difficult to determine where the instruments are in relation to the vocalists, everything sounds like it's coming from the same place. An extra large sound stage separates the instruments and vocalists so that you can clearly tell where each is on the sound stage.
Refers to how clear the headphones audio reproduction is.
Refers to the quality of a music note that distinguishes different types of sound production (voices, musical instruments, etc.).
Refers to the bass performance of the headphones. Rated from Light bass to extreme bass.
Bass Detail
How accurately a headphone can reproduce bass notes; a culmination of attack, speed, decay and clarity. Attack is how precisely it can begin a bass note without delay. Speed is the ability to continue to attack an array of bass notes without lagging. Decay is the length of time after a bass note ends that the sound is still heard. Clarity is how easily all bass frequencies are heard. It gives perception of loose, tight, or muddy bass.

Headphone Design

Headphone Type

This is the design of the earpieces on the headphones. Some headphones go inside the ear, while others rest on the outside of the ear. This helps you know exactly what type of headphones you will be receiving.

In-Ear: The ear buds go into the ear. Most often, the right and left ear buds are two separate pieces.

Enclosed-Ear: Usually are found on the larger headphones. They rest on top of the ear and have padding for comfort, as well as enclosing the ear to the speaker. This type of headphone helps to filter out surrounding noise.

On-Ear: This type of headphone involves the speaker sitting gently on the ear without going in the ear or sealing it off.

Headband Type

Headphone type refers to the construction of the headphones.

Around the Ear means that the headphones wrap around the ear to provide a secure fit. This is most often seen in active and sports headphones.

Around the Neck means that the headphones wrap around the neck. This is also seen in active and sports headphones.

Earbuds means that the right and left sides of the headphones are separated and will fit securely into the ear. These are small, compact, and user friendly.

Over the Head headphones mean that the right and left speakers are connected with a support that goes over the head and rests on top. This is the typical headphone type.

Over the Head
Specifically For
Some headphones can use an IR Transmitter in your vehicle, while some can be plugged into your media device and be used on the go or at home.
Headphone Application

This is the application that the headphones are designed for. Each application has unique features that make it perfect for particular uses.

DJ: These headphones are durable, loud, and will often allow for one ear listening.

Gaming Delivers explosive sound and allows you to communicate with others.

Home Hi-Fi: These audiophile headphones are engineered to produce high fidelity and accurate audio.

Home/Office: These headphones are designed to produce rich, brilliant sounds that the artists would appreciate.

Sports: Designed for active use. These headphones are made to stay in (or on) the ear during workouts.

Kids: Feature noise limiting technology so that your little ones don't damage their ears listening to music too loud.

On-the-Go: On-the-go headphones are lightweight and often fold up for easy storage and portability.

Student: Compact and rugged enough to survive life in a backpack; inexpensive enough to not hurt the wallet of a student.

Studio: Reproduce music perfectly without any coloration. Look here for reference quality studio monitoring headphones.

Traveler/Airplane: These headphones are compact, lightweight, and have a portable design.

Home Hi-Fi
Acoustic Principle

The basic design of the headphones. There are 3 different types:

Open: Have ports that allow air through the back of the diaphragms, enabling the headphones to sound like the music is coming from an outside source.

Closed: Completely sealed and have no air passing through the diaphragms. Sounds like you are in a closed off room.

Semi-open: Have slots or ports in the back of the cup and are partially open. This allows for a mixed sound between an open and closed headphone.

General Features

Noise Reduction technology removes unwanted noise from a signal. Background or ambient noise can be removed to produce clearer speech and enhanced hearing. Typically these Active Noise Canceling (ANC) headphones are powered and use batteries to activate the noise canceling technology. Also referred to as Noise Reduction or Noise Cancellation.
Device Controls & Compatibility
Refers to the devices the in-line controls are compatible with.
Built-In Microphone
This means that the headphones or earbuds have a built-in microphone. This can be a microphone on the cord, built into the headphone, or even a boom microphone. These mics can be used for music devices like iPods, for Smartphones to make and receive calls, or for gaming purposes.
Smartphone/Tablet App Available
These headphones have a companion app available from the manufacturer. These apps are generally available on both the Google Play Store and iTunes for Android and iPhone use. They usually include an equalizer and other controls to give you complete control over your music.
This means the sound of these headphones can be customized to your listening preference through either an app or on-board controls.
Headphone Connection
This is how the headphones connect to the audio source.

Corded means that the headphones use a cord to transfer the audio signal.

Bluetooth means that the audio signal is transmitted from your device to the headphones via a Bluetooth connection.

Corded or Bluetooth means that the headphones can be used as corded headphones or as Bluetooth headphones. They have an input in one or both earcups for use as a corded headphone while they also have a built-in battery for use as Bluetooth wireless headphones.

Wireless means that the audio signal is transmitted wirelessly to the headphones.

Home/RF Wireless
Volume Adjustment
Volume Adjustment means that the headphone (independent of the source) can adjust the playback volume. Many headphones and ear buds have in-line volume control, which allows adjusting the audible volume from a switch on the headphones cord. Other headphones have a volume knob on the headphone can.
Bluetooth Version Compatibility
Which version of Bluetooth the device is compatible with. Is it important that the both devices being paired are the same version of Bluetooth. For example, a Bluetooth version 2.0 cell phone can be paired with a compatible version 2.0 headset.
aptX Codec
Refers to whether these headphones feature aptX Bluetooth audio streaming.
Connector Type
The type of connection the headphones use to connect to receive the audio signal from a music source. Traditional headphones use an analog 3.5mm headphone jack. Newer technology has allowed digital signals to be sent directly to the headphone using an Apple Lightning or USB-C cable.
Jack Size
Refers to whether the headphones use a 3.5mm or 1/4" headphone jack connection.
Jack Angle

The Jack Angle refers to the angle of the input jack on the headphone cable.

Straight Jack: Straight plug with no angle.

Angled Jack: Angled plug, usually a 90 degree angle.

Swivel Jack: A swivel jack is able to swivel between a straight plug and an angled plug.

Included Adapters
Refers to the connection adapters included with the headphones like 3.5mm or 1/4" input adapter as well as airplane adapters that let you use your headphones with airplane specific headphone jacks.
Detachable Cable
Refers to whether the cable can detach from the headphones. If a pair of headphones has a detachable cable, the cable can be replaced with a longer cable, one with (or without) a microphone or if you accidentally damage the cable.
Color Shades
Primary color shades of the headphones.
Refers to materials used to build the headphones. Most headphones are built from some combination of plastic and metal to give you a durable pair of headphones.
Ear Cushion/Earbud Material
Refers to the material that the ear cushions/earbuds are made from. Ear cushions and earbuds are available in a variety of materials, ranging from basic rubber eartips to plush leather ear cushions intended for maximum comfort.
Replaceable Ear Cushions
Refers to whether the ear cushions can be removed and replaced. Often times on heavily used headphones, the ear pads can wear out long before the actual headphones. Headphones with replaceable earpads often last much longer than headphones without replaceable earpads.
Protective Case
Refers to whether a pair of headphones come with a protective case.
Weight (oz.)
This is the weight of the unit in ounces.
Water Resistant
This refers to the level of water resistance of the fitness tracker. Some fitness trackers are water resistant and can be used while swimming, while others are only splash proof or should not be used near the water.
Child Safe
Refers to whether a pair of headphones are designed specifically for children. Child safe headphones feature volume limiting technology so that your child can’t damage their ears while listening to music.
Refers to whether a pair of headphones can be folded up. These headphones feature hinges in the frame above the earcups that allow the headphones to neatly fold into a much more manageable size. Folding headphones are perfect for anyone who spends a lot of time traveling and needs a compact pair of headphones that can fit in their bags.
Ear Hooks
These headphones feature hooks that wrap around your ears for a secure fit.

Gaming Headphones

Compatible Systems
Refers to what system(s) these headphones are compatible with.
Wireless Type
Refers to the wireless connection type used by these headphones.
USB Connection
Refers to whether these headphones can be connected via USB.
Noise Cancelling Microphone
Refers to whether the microphone eliminates ambient noise for crystal clear conversations.
Detachable Microphone
Refers to whether the microphone can be detached from the headphones.
Microphone Impedance
The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
Microphone Frequency Response
The range of frequencies the microphone will pick up (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better.
Surround Sound
Refers to the surround sound type used by the headphones.
Separate Game & Chat Volume Controls
Refers to whether the headset has separate volume controls for the game and chat channels.

Home Wireless Headphones

Hub Connection Type
Refers to how the hub connects to your home stereo system
Wireless Type
Refers to the wireless connection type used by these headphones.
Wireless Range
The maximum distance the headphones can be from the hub and still work in feet.

Audio Features

Driver Type

The physical design of the driver in the headphones.

Balanced Armature:
A balanced armature driver uses a coil wrapped around an armature which is held in between two magnets until it is stimulated by an electrical current. When stimulated, this armature is magnetized which causes it to rotate one way or the other around a pivot point which moves the diaphragm to create sound. Balanced armature driver headphones are generally earbuds and can have multiple drivers in each earbud.

Dynamic drivers are the most common driver type. They feature a permanent magnet, usually neodymium, a voice coil and a conical diaphragm to drive your music. A dynamic headphone driver looks pretty much identical to any typical home theater speaker.

Electrostatic drivers are made up of an extremely thin membrane, usually a coated PET film, stretched between two metal plates. An electrical signal is applied to the metal plates to create an electrical field which, depending on its polarity, draws the speaker diaphragm toward one of the plates which forces air through the perforations in the diaphragm which generates the sound wave.

Planar Magnetic:
A planar magnetic driver is made up of a large membrane suspended between two sets of oppositely aligned magnets. An electric charge is applied to the membrane to induce movement and produce sound waves.

The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
40 ohms
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
100 dB
Driver Size
This refers to the diameter of the driver (speaker) on each side of the headphone.
40 mm
Power Output
Refers to the power output rating (in watts) of the headphones.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
12 - 22000 Hz
Audiophile headphones represent some of the finest headphones available. Audiophile headphones produce genuinely outstanding sound quality as well as extraordinary build quality, components and comfort. They are truly the finest headphones available.
Built-in Amplifier
This refers to whether the headphones have an amplifier built-in.
Amplifier Recommended
This refers to whether a separate headphone amplifier is recommended for use with a specific pair of headphones. It is highly recommended that any headphone with an impedance greater than 100 ohms be amplified.
Pass Throughs
Refers to whether a pair of headphones has an output to connect to another pair of headphones.

What is in the Box?

Main Product
The main product in the box.
Accessories included with the headphones
Paperwork included with the product.

Specials with this Item

Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Albuquerque, NM


February 6, 2013

I bought a pair of these for listening to my TV while riding my exercise bike. I have had Sennheisers previously, and these are MUCH better! No static, perfect reception from several feet away, comfortable and good sound quality. I am about to buy a second pair for my 91 year old mother-in-law who is in an assisted living home, so she can watch her TV LOUDLY and not disturb anyone. They are easy to use and to recharge.

58 of 59 found this helpful

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Colorado Springs, CO

Phenominal sound

November 15, 2013

My father in law wears hearing aids, and has trouble hearing the TV with them. We had an old pair of tv ears, that he used to use which were ok, but he broke them. While searching on the internet for replacement part I found the Sony MDR-IF245RK headphones. The price was equivalent to the replacement parts and I am a big Sony fan, so i purchased a pair for him. Let me tell you these head phones are amazing. they are extremely comfortable and easy to use. Which is important because my father in law is 80 and needs things kept simple. The sound quality is very good and he has absolutely no issues hearing the TV with them on. We bought a pair or his bedroom TV, and just purchased another pair for down stairs. I'm thinking of buying a pair for my bedroom TV as well.. Great product , great price.

10 of 12 found this helpful

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Sony Wireless Headphones

September 2, 2013

purchased these for my Mom in a nursing home, after buying her a new flat screen tv. Once all was hooked up, worked great, but...I thought, once she turned the set off, the sound of the tv would come back on...not.......had to remove the plug on the back of the tv. to get sound again. TV may not be set up for this, but being a brand new set, I thought it would be. Still got headphones, and hope they will work on my tv.

8 of 10 found this helpful

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Wireless & Useless!!!

December 27, 2012

This is a useless product! With the transmitter 2' from the headset, the sound quality is poor and if I turn my head the sound cuts in and out. I ordered two of these and returned both of them. I would NOT recommend this product to anyone!

7 of 9 found this helpful

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New York, NY

Headphones are ehh..

October 21, 2013

The headphones work, but only at short distances with nothing obscuring the signal line. They're a good cheap answer, but if you are looking for quality, go with a bluetooth version.

6 of 8 found this helpful

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Dan Sr.

Maricopa, Arizona

Super Headphones

September 17, 2013

This product has changed my life! I can now listen to TV and tune out all the background noises.
It really does a great job and I would recommend it to anyone!
Very inexpensive, also.

6 of 8 found this helpful

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Jay Mann

Toms river, nj


August 29, 2013

These wireless headphones work wonderfully and are very comfortable. Well worth it

6 of 8 found this helpful

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Jim B.

Irving, Texas

Works Well for Me

August 14, 2013

Some months ago, I experienced a sudden reduction in hearing. If I turned the volume on the TV up loud enough for me to hear, the lower frequencies tended to boom or reverberate in my head which was extremely annoying and the TV would be much too loud for my wife.

Initially I purchased an earlier model of the Sony IR headphones but didn't like them because they didn't want to stay on my head and the cushion design was flawed which made it virtually impossible to keep them in place.

Later, I saw this MDR-245RK model and the headphones looked much better in that the head band was stronger and the cushions seated nicely in a groove around the earpiece so I decided to give it a try.

So far, I've been very happy with them. No problem with distance out as far as 20 feet. I also discovered that this model worked well with the older transmitter so I have one transmitter with our large screen TV and the other connected to a 32-inch TV in my "man hole". Now all I do is take the headphone from one room to the other.

I mentioned the boom effect when the TV was turned up loud enough for me. These headphones have a somewhat restricted frequency response that takes out any boom effect and makes sound much more intelligible for me. For this reason (and feature), these are not full fidelity headphones. They're perfect for me and my hearing problem but if you're wanting high fidelity just for quiet listening in bed, these may not be for you.

These phones will operate on two AAA batteries or a supplied rechargeable battery. I've put my headphones on the charging unit for overnight charging, then used them for frequently as much as four days at about 4 to 5 hours per day before recharging. I've yet to have them run out of battery power while using them.

Otherwise, they are IR headphones with the advantages or disadvantages (depending on what's important to you) of a typical IR system. For me and my needs, I like them.

6 of 8 found this helpful

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North Alabama

Great for a hard of hearing husband!!!

June 16, 2013

I purchased this set of headphones for my husband. He is hard of hearing and has to have the volume on the TV real loud. It drives me crazy. Now he uses his headphone and adjusts the volume to the level that he needs and I can watch TV with him with the TV at a normal volume level. If I am not watching with him, he will mute the TV & only listen through the headphones. GREAT for us!!! Wish we had gotten this years ago.

6 of 8 found this helpful

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Vienna, VA

Very Satisfied!

May 16, 2013

Overall, I'm very satisfied with this product. It has solved the problem of watching TV after my wife has gone to bed without disturbing her. My one complaint with the design is that the little wheel to control the volume should be larger.
I do regret not ordering the RF model rather than the IF model which requires being in line of sight with the transmitter. It's my understanding that with the RF model you can move from room to room and still pick up the sound.

5 of 6 found this helpful

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sarasota, fl

great value

September 17, 2013

Range and sound quality very good.
Fit and finish very good for the price.
We rated these as a great value

5 of 7 found this helpful

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Browse 1 question and 1 answer
Hide answersShow all answers | Sort by
can rca jack to rca jack be used on mdr-if245rk headphones?
A shopper on Sep 25, 2014
Best Answer: Hello,

Yes; That is one of the two methods of possible Inputs.
Reply · Report · Customer SStaff on Sep 27, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Sony MDR-IF245RK (MDRIF245) Wireless Headphones

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Sony MDR-IF245RK (MDRIF245) Wireless Headphones

On-Ear Wireless Stereo IF Headphones


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