Bluetooth audio is part of the local output path: pairing and codecs are Windows-managed; ECHO uses System (or WASAPI) to select the paired Bluetooth device. Connect does not use Bluetooth (Connect uses LAN DLNA / AirPlay).
Overview: Connect frontend playback devices. Windows: Windows audio setup.
| Item | Owner |
|---|
| Pairing, codecs (SBC / AAC / aptX, etc.) | Windows Bluetooth stack |
| Bluetooth as output device | Windows Sound settings |
| ECHO to Bluetooth | Local output → select Bluetooth device |
| “Cast ECHO to another room” over Bluetooth | Not supported — use DLNA Renderer or AirPlay 1 on LAN |
Sound in another room → Connect (DLNA / AirPlay), not Bluetooth relay from ECHO.
| Scenario | Recommendation |
|---|
| First ECHO playback test | Wired headphones or built-in speakers |
| Laptop + BT headphones on the go | OK; ECHO System + Bluetooth device |
| Desk high-quality listening | Wired USB DAC preferred |
| BT speaker in living room, PC in study | Prefer DLNA streamer or AirPlay 1 |
- Windows: Settings → Bluetooth & devices → pair device.
- Settings → System → Sound → Bluetooth output.
- Verify with system player.
- ECHO: System; same Bluetooth device.
- Play MP3.
| Limit | Notes |
|---|
| Codec / quality | Windows / BT protocol |
| Latency | Higher than wired |
| Exclusive / ASIO | Usually unsuitable for Bluetooth |
| DSD | Not for Bluetooth bit-perfect |
| Symptom | Action |
|---|
| No BT in OS | Re-pair; check battery / range |
| OS plays, ECHO silent | Match device; reset audio engine |
| Connect issues | Debug paths separately |
Wire streamer when possible: LAN and firewall.