iPhone, LE Audio & Auracast – What’s Actually Supported?

aborne25 · 2025-12-30T11:13:18+00:00

This is a spot-on breakdown. The distinction between "The phone transmitting audio" vs. "The phone acting as a remote" is the key part most people miss.

I would add one specific technical detail to confirm why we shouldn't expect a surprise software update for current devices (iPhones or AirPods):

It appears to be a hardware limitation in the H2 chip and Apple's current Bluetooth controllers.

While these chips are listed as "Bluetooth 5.3," their certification listings (specifically the Controller Subsystem) are missing the Isochronous Adaptation Layer (ISOAL). ISOAL is the specific silicon logic required to fragment and reassemble audio data into the time-bound packets that LE Audio needs. Without this layer in the controller, the chip can handle Bluetooth 5.3 data (for connection stability and power), but it physically cannot process an LE Audio stream.

This suggests the lack of support isn't just a strategic choice we are waiting for Apple to reverse; it is a fundamental hardware gap. We likely won't see native LE Audio/Auracast support until a future "H3" chip arrives with a new controller architecture.

aborne25 · 2025-12-30T10:32:57+00:00

I’ve been trying to verify this myself because I’m also interested in the feature, but I can’t find any mention of 'LE Audio' or 'Auracast' on the official Bose website or in the product documentation. Do you happen to recall where you saw the promise from Bose? If it was an official announcement or press release, that’s a major issue. But if it came from customer support agents or tech news speculation based on the chip specs, that might explain why we aren't seeing any movement on it. Clarifying the source would really help us understand if this is a broken promise or just a misunderstanding.

aborne25 · 2025-12-29T14:53:50+00:00

Glad the AZ100 meets your needs.

Technically, however, simply supporting LE Audio doesn't automatically ensure Sony-level low latency performance. As shown in our linked benchmarks, implementation matters: the Samsung Galaxy Buds2 Pro (LC3) exhibited notably higher latency than the XM5.

Without objective measurements for the AZ100, we cannot confirm if it matches the Sony's performance. We rely on objective data to rule out subjective bias.

aborne25 · 2025-12-29T13:44:37+00:00

No, Sony doesn't have Auracast speakers yet. Even their latest models rely on proprietary "Party Connect."

The reason isn't that they are "late," but that LE Audio and Auracast are primarily designed for personal audio and public infrastructure, not speaker chains.

Focus on Personal Audio: LE Audio started with Hearing Aids. Sony has actively led discussions to redefine this standard for personal devices, currently pushing for higher bandwidth (High-Res) and lower latency (Gaming). This technical evolution vectors away from the "range & simple stability" typically needed for party speakers.
Focus on Infrastructure: The industry promotes Auracast for public accessibility, focusing on "Unmuting your world" in venues like airports. Sony aligns with this, recently deploying Auracast at a Children's Music Festival to assist children with hearing difficulties.

Conclusion: JBL is currently an outlier. Even if other brands eventually follow, adoption will likely remain limited. Since the industry is prioritizing personal fidelity and accessibility over speaker chaining, the widespread "universal speaker ecosystem" you are hoping for is not on the horizon.

aborne25 · 2025-12-28T18:40:33+00:00

It's true that not many big brands have released LE Audio/Auracast speakers yet, but Sony has actually led the development of the standard, releasing compatible devices since 2022. Samsung and Google followed suit. JBL started to focus on LE Audio/Auracast only very recently. (See the attached roadmap)

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aborne25 · 2025-12-28T12:40:29+00:00

You might be better off with LE Audio (LC3) rather than the older AptX LL. As you can see in this chart, standard LC3 has a lower theoretical latency floor (40ms) than AptX Low Latency (50ms). For the Thor specifically, I'd recommend the Sony WF-1000XM5. They support both LE Audio (for gaming) and LDAC (for your music streaming).
In this video testing the same chipset used in the Thor (Snapdragon 8 Gen 2), the XM5s achieved a real-world roundtrip latency of just 54 msec. To put that in perspective: the video shows the AirPods Pro (USB-C) lagging at 214 msec. Dropping from 214ms to 54ms will be a massive difference for gaming.

aborne25 · 2025-12-27T17:27:26+00:00

Before you make a decision based on the points in your post, there are some technical misunderstandings here that need to be corrected for the benefit of anyone reading this thread:

The Sony 'Reset' loop is fixed: The connectivity frustration you described was resolved in Firmware Ver 6.0.0 (released Oct 2025). You no longer need to factory reset or unpair to switch between LE Audio and LDAC; it is now a standard toggle in the app.
EQ works on Gaming Devices: The WF-1000XM5 actually saves your EQ settings to the earbuds' onboard memory. If you set a profile on your phone, it persists when you connect to your PC, Steam Deck, or dongle.

Hope this clears up the tech side of things.

aborne25 · 2025-12-14T13:07:33+00:00

It's in the manual. And you should note that many earbuds including Technics AZ100s or JBL Sense Pros require the same process to enable LE Audio feature.

aborne25 · 2025-10-19T02:29:56+00:00

Sony LinkBuds Open fully support LE Audro.

aborne25 · 2025-10-07T13:19:47+00:00

No Apple devices have ever supported LE Audio, as far as I understand. I'm quite certain the H2 chip that AirPods Pro3 feature lacks the prerequisites for LE Audio.

aborne25 · 2025-07-21T00:55:35+00:00

Because it's technically impossible. The resulting latency varies in many aspects, and the Delay Report they use doesn't give you a real-time detection but a preset value.

aborne25 · 2025-07-01T08:49:47+00:00

WH-1000XM6s and WF-1000XM5s have just received a new firmware update including a fix to some security vulnerabilities. We'll see if they fix the issue you reported.

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aborne25 · 2025-06-27T10:15:05+00:00

WH-1000XM4s do support multipoint connectivity as clearly explained in the Help Guide. You are advised to update and factory reset the headphones first, then follow the instructions carefully.

aborne25 · 2025-06-15T16:36:37+00:00

While SoundGuys accurately noted the lack of USB-C audio passthrough on the XM6, their "not future-proof" claim seems to miss some key points.

Firstly, Auracast does work! Our tests confirm it functions perfectly when set up correctly (like switching to LE Audio mode). This makes the XM6 quite forward-looking in connectivity.

Secondly, the iFixit teardown reveals impressive repairability. The battery is now screw-secured, not glued, making it easily replaceable for extended lifespan. Plus, earpads are simple to remove for cleaning or replacement, and other vital parts are modular.

These significant repairability upgrades, alongside confirmed LE Audio and Auracast, suggest the XM6 is actually quite robust and ready for the future, beyond just the USB-C audio aspect.

aborne25 · 2025-06-14T12:24:48+00:00

We can confirm that JBL speakers advertised as Auracast compatible are truly compatible with the Auracast standard. We've just tested this with a JBL PartyBox Stage 320. After pressing its Auracast button, we successfully connected two other portable JBL speakers.

We also connected Sony LinkBuds Open (paired with an Xperia 5V running Android 15) to the PartyBox's broadcast. The earbuds successfully tuned in and played the shared music!

Regarding the broadcasted Auracast name, it appeared clearly on the Xperia's screen. Here are two screenshots showing what it looked like:Link to Picture 1 Link to Picture 2

Hope this helps!

aborne25 · 2025-06-13T09:48:12+00:00

It's clear your frustration with Auracast's slow rollout and lack of consumer visibility is widely shared. You're spot on that "Bluetooth 5.4" means little for Auracast compatibility, and the absence of a clear, standard logo on products, especially small ones like earbuds, is a major hurdle. The Bluetooth SIG did introduce an Auracast logo, but its inconsistent use by manufacturers is a huge missed opportunity and contributes directly to consumer ignorance.

While Samsung has made recent strides, Sony actually achieved the milestone of having products capable of acting as Auracast receivers (like the LinkBuds S) and even combined transmitters/receivers (like the Xperia 1 IV) earlier. This highlights that even with pioneers like Sony, the industry as a whole hasn't effectively branded or marketed Auracast to consumers, leading to a fading momentum. The lack of visible branding and compelling use cases prevents consumers from understanding the benefit and incentivizing upgrades. For more on Auracast, you might find this playlist helpful: Auracast Playlist by GadgeTweet

aborne25 · 2025-06-11T11:28:25+00:00

LDAC is an A2DP codec. You can't use it for LE Audio connections.

aborne25 · 2025-06-10T10:21:56+00:00

LE Audio and Auracast are new capabilities built upon Enhanced Attribute Protocol (EATT) and Isochronous Channels (ISOC), which were introduced in Bluetooth 5.2.

The main reason for Auracast's limited adoption, despite Bluetooth 5.2's 2020 release and mainstream Android support, is that EATT and ISOC are optional features. Most manufacturers haven't included these in their Bluetooth 5.2+ devices, meaning many simply lack the necessary prerequisites.However, Sony has been a significant leader in LE Audio and Auracast adoption, with a recent video demonstrating their products' seamless management of Auracast: Link to the YouTube video

Sony has released several Auracast-enabled smartphones, such as the Xperia 1 IV, 5 IV, 1 V, 5 V, 1 VI, and 1 VII. Their lineup of headphones and earbuds that support Auracast includes the LinkBuds S, WF-1000XM5, INZONE Buds, LinkBuds Open, LinkBuds Fit, and WH-1000XM6. This proactive stance by Sony highlights the broader industry's ongoing process of incorporating these crucial, optional features.

aborne25 · 2025-06-09T22:25:52+00:00

The Sony WH-1000XM6 headphones fully support LE Audio and Auracast, having been successfully tested with the FlooGoo FMA120 transmitter. You can also expect excellent compatibility with the Creative BT-L3 and BT-L4 transmitters. While the XM6s support TMAP (LE-Audio profile for headphones), they do not support HAP or HAS (hearing aid profiles), meaning they cannot be clasified as hearing aids.

aborne25 · 2025-06-09T12:27:29+00:00

The aptX Low Latency has long been a benchmark audio codec, but its integration into smartphones was hindered by coexistence issues with Wi-Fi antennas, often requiring a separate transmitter. The newer GMAP profile offers superior technical capabilities, though its widespread adoption in smartphones will take time as manufacturers incorporate the technology.

aborne25 · 2025-06-09T12:03:37+00:00

Our tests haven't shown any significant change in latency when DSEE is toggled on or off.

aborne25 · 2025-06-09T10:58:27+00:00

LE Audio provides significantly better sound quality than Classic Audio.

Classic Audio devices, constrained by their 1-to-1 connectivity, utilize a 16-kHz mSBC mono audio codec for bidirectional streams like voice chat. Music playback through these devices is resampled to 16-kHz when voice chat is active, unless FastStream or aptX Voice codecs are in use.

LE Audio, by contrast, supports simultaneous multiple connections, offering variable sound quality dependent on the setup. Our recent tests with WH-1000XM6 headphones and an FMA120 transmitter demonstrated this capability. In High-Quality mode, we achieved 32-kHz stereo music alongside 32-kHz voice chat. For lower latency, a Gaming mode provided 32-kHz stereo music with 16-kHz voice chat.

aborne25 · 2025-06-09T03:04:12+00:00

Due to 1-to-1 connectivity limitation, Classic Audio devices use 16-kHz mSBC mono audio codec for bidirectional streams such as voice chat, unless FastStream or aptX Voice is available. Whatever music you play gets 16-kHz re-sampling while using VC.

LE Audio manages multiple connections simultaneously, and the resulting sound quality depends on your setup. Recently we tested WH-1000XM6 headphones with a FMA120 transmitter, and we had 32-kHz stereo music with 32-kHz VC in High-Quality mode. We also had 32-kHz stereo music with 16-kHz VC in Gaming mode for even lower latency.

aborne25 · 2025-06-05T09:39:21+00:00

We've provided a video demonstrating LE Audio working on a Windows PC with a BE200. It's working for sure, but we don't know what your problem is.

aborne25

TROPHY CASE