Headphone compatibility is not just about whether a plug fits a jack. It involves matching wireless audio codecs, understanding electrical impedance, and checking whether platform-specific features like spatial audio will work with your devices. Getting these details right helps you avoid quiet sound, dropouts, or missing features.
Codec compatibility
Wireless headphones use audio codecs to compress and transmit sound over Bluetooth. The baseline codec is SBC, but higher-quality options exist. For a codec to work, both the source device (such as a smartphone) and the headphones must support it. If they do not share a codec, the connection falls back to a lower-quality option.
According to Sony’s LDAC page, LDAC is an audio technology that transmits at a maximum bitrate of 990 kbps. It is certified for “Hi-Res Audio Wireless” at that transfer rate. The bitrate can automatically adjust among 330 kbps, 660 kbps, and 990 kbps depending on network conditions, which Sony describes as a “best effort” mode for stable connections. LDAC is a software codec, and its source code was contributed to the Android Open Source Project, so many Android smartphones can transmit it. Sony notes that a license is required to implement the LDAC software.
Qualcomm’s aptX website introduces Snapdragon Sound, a technology designed to deliver premium audio experiences. It supports lossless and high-resolution music streaming, ultra-low latency for gaming, super wideband voice for calls, and glitch-free audio even in busy environments. The site lists various smartphones and earbuds that include Snapdragon Sound, but compatibility requires both the source and the headphones to carry the technology.
The Bluetooth SIG explains that LE Audio includes a new codec called the Low Complexity Communications Codec (LC3). Extensive listening checks have shown that LC3 provides improvements in audio quality over SBC, even at a 50 percent lower bit rate. This gives developers flexibility to balance audio quality and power consumption. LC3 is part of the LE Audio specifications, which operate on the Bluetooth Low Energy radio. For more on how these codecs compare, see our Bluetooth Codecs guide.
LE Audio and Auracast
Beyond codecs, the Bluetooth SIG has introduced LE Audio, which brings new capabilities that affect compatibility. LE Audio operates on the Bluetooth Low Energy radio, unlike Classic Audio which uses the Bluetooth Classic radio. It supports Multi-Stream Audio, enabling the transmission of multiple independent, synchronized audio streams between a source and one or more sink devices. According to the Bluetooth SIG, this can improve stereo imaging, make voice assistant use more seamless, and smooth switching between multiple source devices.
LE Audio also adds support for hearing aids, allowing Bluetooth hearing aids to bring wireless calling, listening, and watching to people with hearing loss. The European Hearing Instrument Manufacturers Association (EHIMA) contributed specialist knowledge to improve the audio experience for hard of hearing people, the Bluetooth SIG states.
A major part of LE Audio is Auracast broadcast audio. The Bluetooth SIG describes Auracast as a new Bluetooth capability that lets an audio source broadcast one or more audio streams to an unlimited number of audio sink devices. This enables shared listening: you can invite others to hear your audio, unmute televisions in public spaces, and use it as an assistive listening system. The Bluetooth SIG notes that Auracast is expected to become the next generation assistive listening technology, improving audio accessibility. Joining an Auracast broadcast can be as simple as searching for it like a Wi‑Fi network, scanning a QR code, or tapping an NFC tag. For a deeper look at the underlying technology, visit our Headphone Technology section.
Impedance matching
For wired headphones, impedance is a key compatibility factor. beyerdynamic’s impedance guide explains that impedance, measured in ohms (Ω), is the electrical resistance of the voice coil in the headphone’s transducer. The lighter the coil, the clearer and more precise the transducer can sound, but lighter coils also have higher impedance. Not every source can supply the voltage needed to drive high-impedance headphones properly.
beyerdynamic breaks impedance into three broad ranges. Low impedance (16 to 32 Ω) works optimally with smartphones, laptops, and other mobile devices. Medium impedance (32 to 80 Ω) is well‑suited for audio interfaces, creator setups, and home‑studio environments. High impedance (from approximately 250 Ω) requires a powerful headphone amplifier and delivers maximum fidelity in the studio. A common high-impedance value is 250 Ω, and some models reach 600 Ω.
The guide provides an example calculation. When a smartphone with an output voltage of 1 volt is connected to the DT 770 PRO (80 ohms), the resulting power is about 12.5 mW. The same smartphone connected to the DT 990 Edition (600 ohms) delivers only about 1.6 mW. That is almost an eight‑fold difference in power, which translates directly to volume. To get the same loudness from the 600‑ohm headphones, you would need to increase the voltage, which is difficult for mobile devices. A portable DAC with a built‑in headphone amplifier can help when using high‑impedance headphones on the go. For more on these specifications, see our Impedance and Sensitivity page.
Platform-specific features
Some audio features are tied to specific hardware and software ecosystems. Apple’s AirPods User Guide describes Spatial Audio and head tracking, which create an immersive, theater‑like sound that surrounds you. This feature is available on AirPods 3, AirPods 4, AirPods 5, AirPods Pro, and AirPods Max when connected to a supported iPhone, iPad, Mac, or Apple TV 4K. It works with supported shows, movies, songs, games, and FaceTime calls.
Apple’s guide explains that you can create a Personalized Spatial Audio profile using an iPhone X or later. The profile customizes audio to match your ear and head shape and syncs across Apple devices signed in to the same Apple Account. You can control Spatial Audio and head tracking per app from Control Center on iPhone or iPad, or from the menu bar on a Mac. Options include Off, Fixed (Spatial Audio without head tracking), and Head Tracked (both on). The settings are saved per app, so you can, for example, keep head tracking on for movies but off for music. Not all apps or content support Spatial Audio. Learn more in our Spatial Audio guide.
Other compatibility considerations
Beyond codecs, impedance, and platform features, compatibility also depends on the physical connection type. Wired headphones may use a 3.5 mm jack, USB‑C, or Lightning connector, and not all devices have the same port. Wireless headphones rely on Bluetooth, so check which Bluetooth features both devices support. For a detailed comparison, see our Wired vs Wireless article.
Some features, such as active noise cancellation or transparency mode, may also require specific hardware or software support from the source device. Check the manufacturer’s documentation for your particular devices. When evaluating headphone compatibility, consider the codecs your source and headphones share, the impedance if you are using a wired pair, whether you need LE Audio or Auracast support, and whether platform‑specific features like Spatial Audio will work with your setup.
Frequently asked questions
Do I need a special device to use LDAC?
Sony’s LDAC page states that LDAC is a software codec and its source code was contributed to the Android Open Source Project, so many Android smartphones can transmit LDAC. However, both the source device and the headphones must support LDAC for the codec to be used. A license from Sony is required to implement the LDAC software, but many manufacturers have included it.
Can I use high-impedance headphones with my smartphone?
beyerdynamic’s impedance guide explains that low‑impedance headphones (16 to 32 ohms) are designed for mobile devices like smartphones and tablets. High‑impedance headphones (from about 250 ohms) need more voltage than a typical smartphone can provide, so they may sound very quiet. A portable headphone amplifier or a DAC with a built‑in amplifier can make high‑impedance headphones usable with a smartphone.
What is Auracast broadcast audio?
According to the Bluetooth SIG, Auracast broadcast audio is a new Bluetooth capability that lets an audio source transmit one or more audio streams to an unlimited number of receiving devices. It enables shared listening, unmuting public televisions, and assistive listening in venues. Users can join a broadcast by searching for it, scanning a QR code, or tapping an NFC tag.
For more detailed guidance on headphone compatibility, visit our Compatibility page.
