How AI Enhancer operates
AI Enhancer uses a neural network to restore high frequencies. It processes music as it plays. The result is an estimate, not the original master.
The feature is off by default. It changes nothing until you turn it on. While active, the badge says Enhanced instead of Bit-perfect.
Review these four areas if AI Enhancer is unavailable or turns off.
1. Processor and neural chip requirements
AI Enhancer is designed for a dedicated neural chip (NPU). Phones with a supported Snapdragon or Dimensity neural chip run the full model. Other phones run Lite mode on the main processor.
- Supported neural chips: Snapdragon 7 Gen 1 through 8 Elite Gen 5, and Dimensity 7300 through 9400. The full list is below.
- Lite mode on main processor: Runs on the main processor when your phone lacks a supported neural chip.
- Real-time processing: The feature turns off if processing cannot keep up in real time.
- One-time model download: Each chip requires a one-time model download of 10 to 60 MB.
Qualcomm Snapdragon
- Snapdragon 8 Elite Gen 5
- Snapdragon 8 Elite
- Snapdragon 8 Gen 3
- Snapdragon 8s Gen 3 / 8 Gen 2
- Snapdragon 8+ Gen 1 / 8 Gen 1
- Snapdragon 7+ Gen 3 / 7 Gen 3 / 7s Gen 2
- Snapdragon 7+ Gen 2 / 7 Gen 1
MediaTek Dimensity
- Dimensity 9400 / 9400+
- Dimensity 9300 / 9300+ / 9350
- Dimensity 8400 / 8400-Ultra / 8450
- Dimensity 8300 / 8300-Ultra / 8350
- Dimensity 7300 / 7300-Energy / 7350
Other phones run AI Enhancer in Lite mode on the main processor.
2. Sample rate and playback restrictions
AI Enhancer works only on standard-resolution audio. It turns off automatically when playback conditions do not match:
- Standard sample rates only: Works exclusively on 44.1 kHz and 48 kHz PCM tracks.
- Hi-res tracks disabled: Automatically disabled on 96 kHz, 192 kHz and higher sample rates.
- DSD tracks disabled: Stays off for DSD audio files and DSD disc images.
- Bit-perfect lock active: Bit-perfect lock turns off all sound processing, including AI Enhancer.
- Cast playback: Stays off when streaming audio to cast-enabled speakers and TVs.
- AI Karaoke active: Disabled while AI Karaoke stem separation is running.
3. Motorola firmware restrictions
Some device manufacturers lock third-party applications out of the neural chip in their system firmware.
- Firmware lock: Even with a compatible processor, system firmware may block neural chip access.
- Motorola devices: Several Motorola phone models restrict third-party neural access by default.
- Automatic fallback: When the chip is locked, the app falls back to Lite mode.
- Official support thread: You can request neural chip access on Lenovo's official support forum.
4. USB DAC setup and troubleshooting
Follow these steps to set up your USB DAC for direct output:
- Cable connection: Connect with a USB-C cable or an OTG adapter. USB-C phones enter host mode automatically.
- Android permission: Connect the DAC and allow access when Android asks. Tick the box to remember this device.
- Hardware volume: Control volume on the DAC hardware. Software volume inside Android alters the bitstream.
- Check the signal badge: The Now Playing badge confirms audio status. It shows Bit-perfect, Enhanced, Resampled or Lossy.
- Direct output bypass: Bitperfect Player talks directly to UAC1 and UAC2 DACs. This skips Android's system mixer.
- Background playback: Set battery usage to Unrestricted in Android settings. Lock the app in your recent tasks screen.