LDAC is a Bluetooth audio codec developed by Sony that transmits up to 990kbps of audio data — approximately three times more than AAC (256kbps) and six times more than standard SBC (328kbps). Released in 2015 and standardised into Android 8.0 in 2017, LDAC is the only Bluetooth codec certified for high-resolution audio playback (defined as audio above 16-bit/44.1kHz) in the Bluetooth wireless format.

Why Codec Bitrate Matters

All Bluetooth audio undergoes lossy compression — the audio file is encoded at the source device, transmitted wirelessly, and decoded in the earbuds. Lower bitrate codecs (SBC, AAC) compress more aggressively, discarding audio information that psychoacoustic models predict the ear cannot hear. At 250–330kbps, the difference from uncompressed audio is mostly imperceptible on average consumer earbuds. At 990kbps (LDAC maximum), the compression is so light that the audible difference from uncompressed FLAC requires high-quality earbuds and careful listening to detect — but it is measurable, and to trained ears, audible.

LDAC vs AAC vs aptX HD

SBC: 328kbps maximum. Universal Bluetooth baseline. Mandatory on all Bluetooth audio devices. Lowest quality, highest compatibility. AAC: ~250kbps. Apple's preferred codec. Lower bitrate than SBC numerically but perceptually efficient encoding makes it sound better. Native on iOS; variable quality on Android depending on manufacturer implementation. aptX HD: 576kbps. Qualcomm's high-resolution codec. Requires Qualcomm chipset in both earbuds and source device. Better than AAC, below LDAC. LDAC: 330/660/990kbps (three tiers). Sony's codec, standardised in Android 8.0. Best performance at maximum bitrate. Requires Android 8.0+ source device.

LDAC's Three Quality Tiers

LDAC operates at three selectable bitrates: 330kbps (Connection Priority) — stable in low-signal environments, quality comparable to high-quality AAC. 660kbps (Balanced) — the recommended setting for most listening situations. Audibly better than AAC on good earbuds; maintains stable connection within normal device range. 990kbps (Sound Quality Priority) — maximum hi-res quality. Requires strong Bluetooth signal (within 5 metres of source device). Can have dropout in congested wireless environments (crowded transport, many active Bluetooth devices nearby).

How to Enable LDAC on Android

LDAC is available on Android 8.0+ but hidden in Developer Options: (1) Go to Settings → About Phone. (2) Tap Build Number 7 times — a prompt says "You are now a developer." (3) Go back to Settings → System → Developer Options. (4) Scroll to Bluetooth Audio Codec. (5) Select LDAC. The setting takes effect on next connection. Your LDAC-compatible earbuds will display LDAC in the codec indicator (visible in some companion apps and Bluetooth system menus).

Does LDAC Actually Sound Better?

At 660kbps and 990kbps on high-resolution source material through quality earbuds, LDAC delivers audible improvements: finer high-frequency detail (cymbals, breath, string harmonics), slightly wider perceived soundstage, and marginally better bass texture. The improvement is most noticeable comparing LDAC vs SBC — the difference vs AAC is subtler and more source-dependent. For Spotify at 320kbps, LDAC's advantage is minimal because the source is already lossy. For Tidal Masters, Apple Music Lossless, or FLAC files, LDAC's advantage is real.

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Frequently Asked Questions

What is LDAC and why does it matter?

LDAC is Sony's proprietary Bluetooth audio codec that transmits audio at up to 990 kbps — approximately three times the data rate of standard SBC. This allows it to carry Hi-Res Audio wirelessly, making it the go-to choice for audiophiles who don't want to compromise on sound quality.

Which devices support LDAC?

LDAC is natively supported on Android 8.0 (Oreo) and later devices. Sony headphones and earbuds prominently feature LDAC. It is not supported on Apple devices — iPhone and iPad users must use AAC instead.

Is LDAC better than aptX?

LDAC at its highest bitrate (990 kbps) delivers more audio data than aptX HD (576 kbps), making it technically superior for Hi-Res playback. However, LDAC's 330 kbps adaptive mode can drop quality under poor wireless conditions, whereas aptX tends to be more stable.

Does LDAC drain battery faster?

LDAC at 990 kbps processes more data and can consume slightly more power than SBC or AAC. In real-world use the difference is modest — typically 10–15% less battery life compared to SBC at similar volume levels.

Can I use LDAC on iPhone?

No. LDAC is not supported on iOS or iPadOS. iPhone users are limited to AAC, which is Apple's preferred high-quality codec and performs well on Apple devices. For LDAC, an Android smartphone is required.