LC3 (Low Complexity Communication Codec), which comes with Bluetooth LE Audio in Bluetooth 5.2, achieves 20–30ms latency — the lowest of any Bluetooth codec available today. That’s faster than aptX Low Latency (32–40ms) and dramatically faster than every other consumer codec.
At 20–30ms, LC3 latency is imperceptible to humans. You won’t feel lag gaming, you won’t see audio sync drift in videos, and you won’t notice delay during phone calls. For the first time, Bluetooth audio is genuinely fast enough for professional use cases.
The catch: adoption is still limited in early 2025. Both your phone and headphones need to support Bluetooth 5.2 and LE Audio. If either doesn’t, you fall back to older codecs.
What Changed with LE Audio?
LE Audio isn’t just a new codec. It’s a fundamental redesign of how Bluetooth handles audio. The old A2DP profile (Advanced Audio Distribution Profile) that every phone and headphone uses has inherent latency because of how it buffers and encodes audio.
LE Audio uses Bluetooth’s LE (Low Energy) stack instead — originally designed for notifications and fitness trackers — repurposed for audio. Because LE was built with power efficiency and real-time communication in mind, it has lower latency and better power efficiency than the legacy A2DP.
LC3 is the mandatory codec for all LE Audio devices. Because it’s license-free (unlike aptX, which requires Qualcomm licensing fees), manufacturers can include it without paying royalties. That speeds up adoption. Within a few years, every Bluetooth device will have LC3 as a fallback, making it the standard the way SBC is today.
LC3 Specifications vs. Other Codecs
| Codec | Bitrate | Latency | Power | Audio Quality |
|---|---|---|---|---|
| LC3/LE Audio | 160 kbps | 20–30ms | Excellent | Good (equivalent to SBC at 328 kbps) |
| aptX LL | 352 kbps | 32–40ms | Good | Very Good |
| aptX Adaptive | 279–420 kbps | 50–80ms | Good | Excellent |
| LDAC | 990 kbps | 200–300ms | Poor | Excellent (hi-res) |
| SBC | 328 kbps | 150–300ms | Good | Fair |
Notice LC3 uses only 160 kbps bitrate but achieves better latency and comparable audio quality to SBC at 328 kbps. That efficiency matters — it’s why Bluetooth 5.2 devices with LC3 get better battery life than older Bluetooth 5.0/5.1 devices.
Current LE Audio Support: Which Devices Support LC3?
As of early 2025, LC3 support is growing but still not universal:
Phones:
- Google Pixel 8 and newer (Android 14+)
- Samsung Galaxy S23 and newer (with Samsung OneUI 5.1+)
- Samsung Galaxy A series (mid-2023 models and newer)
- OnePlus 12 and newer
- Sony Xperia 1 IV and newer (requires developer mode to enable)
- iPhone: Still not supported (no LE Audio support on iOS as of April 2026)
Headphones:
- Sony WH-1000XM5, WF-1000XM5 (requires compatible phone)
- Sony WH-1000XM6
- Sennheiser Momentum 4 Wireless (software update required)
- Samsung Galaxy Buds3 Pro
- Some JBL and Beats models
- Growing list of gaming headsets and budget earbuds
Check before buying: LE Audio support requires specific Bluetooth 5.2 chipsets on both the phone and headphones. Check the detailed specs on the manufacturer’s website, not just the product page headline.
When Will LC3 Replace SBC?
Within 2–3 years (likely by 2027–2028), LC3 will become the Bluetooth standard fallback codec, replacing SBC. By then, most phones, headphones, and Bluetooth speakers will support LE Audio natively.
Once that happens:
- Default Bluetooth audio will have 20–30ms latency instead of 150–300ms
- Bluetooth devices will have 25–30% better battery life
- Professional audio over Bluetooth becomes viable
- Gaming and video sync issues become non-existent
This transition is faster than previous Bluetooth upgrades because LC3 is license-free, so manufacturers have no financial incentive to delay adoption.
Auracast: Multi-Stream Bluetooth Audio
LE Audio brings a feature called Auracast, which lets one Bluetooth transmitter (your phone) send simultaneous, independent audio streams to multiple receivers.
Real-world example: You’re on a train with a friend. Both of you can listen to the same podcast from your phone via Auracast without each needing their own headphones. Or you can listen to different audio — you get a language translation of a movie, your friend gets the original audio. The transmitter sends both streams simultaneously, and each receiver handles its own stream independently.
Auracast also enables public broadcast audio — imagine scanning a Bluetooth code at a museum exhibit to hear the audio guide, or pairing your hearing aid to a speaker system at a concert for direct audio feed. Hearing aid support is one of LE Audio’s major design goals.
LE Audio on iPhone and Mac: The Missing Piece
Despite being the standard since Bluetooth 5.2, Apple has not implemented LE Audio or LC3 support on any iPhone, iPad, or Mac as of April 2026. This is intentional — Apple prefers its own proprietary audio solutions (AAC Bluetooth codec, AirPods with custom chips, spatial audio). Check our complete AirPods latency guide for details on Apple’s audio approach.
Apple users are stuck with AAC at 120–180ms latency for the foreseeable future. If you want low-latency Bluetooth on iOS, your only option is to use AirPods or Beats — Apple’s own products that use optimized firmware.
This creates an ecosystem split: Android flagships will have 20–30ms latency with LC3 within a year, while iPhones will remain at 120–180ms AAC latency. For gaming and video, Android users will eventually have a technical advantage.
Should You Wait for LE Audio Devices or Buy Now?
If you game, watch videos, or monitor live audio, waiting for LC3 devices is worth considering if you don’t already have low-latency headphones. LE Audio devices are reaching the market now (2025), and prices will become competitive within 6–12 months.
If you produce music or stream professionally, LC3 won’t matter until you’re ready to ditch USB audio interfaces for Bluetooth monitoring. For now, stick with wired connections.
If you’re on iPhone, don’t wait. Apple won’t add LE Audio support anytime soon. Use aptX Adaptive headphones on Android, or AirPods on iOS.
FAQ
Is LC3 audio quality as good as aptX HD or LDAC?
At 160 kbps, LC3 sounds equivalent to SBC at 328 kbps — good enough for most listeners, but not quite as detailed as aptX HD at 576 kbps or LDAC at 990 kbps. For casual listening, LC3 is indistinguishable from hi-res codecs. For critical listening or mixing, you’ll still want LDAC or a wired connection.
Can I use LE Audio headphones with a phone that doesn’t support LE Audio?
Yes, but they’ll fall back to the highest common codec. If your phone supports aptX HD, the headphones will use that. If only SBC, they’ll use SBC. Always check compatibility before buying.
Will LE Audio devices be expensive?
Initially, yes. Early LE Audio headphones (2024–2025) cost 20–30% more. By 2027, as LE Audio becomes standard, prices will normalize. If you’re budget-conscious, wait 12–18 months for lower-cost LC3 options.
Does LE Audio work with older Bluetooth versions?
No. LE Audio requires Bluetooth 5.2 on both devices. Bluetooth 5.0 and 5.1 devices are stuck with A2DP codecs. You can’t retrofit older devices.
Dalton is an audio testing and latency optimization writer at SoundLatencyTest. He focuses on audio latency analysis, sound delay testing, recording performance, and audio troubleshooting tools for producers, gamers, streamers, musicians, and audio engineers.