SyncueSong splits headphone monitoring from stream audio

SyncueSong opened its Windows beta on October 23, 2026, and is free until its formal release. The online singing and music-session app processes what performers hear in their headphones separately from the audio sent to a stream or recording, so the two outputs can use different buffer settings.

A small monitor buffer, more room for the stream

The headphone monitor can use ASIO with a small audio buffer to prioritize low latency. The separate WASAPI output for streaming and recording can keep more audio in reserve to reduce dropouts.

AV Watch’s October 26 interview describes a recommended broadcast receive buffer of 100 ms. The broadcast output waits for incoming voices and delays your own voice and backing music to match, without adding that waiting time to the headphone monitor. This is a broadcast-buffer recommendation, not a guarantee of total audio latency.

The SYNC function lets you choose one participant as the timing reference and aligns the voices for streaming and recording. It does not erase network or device delay, or make everyone’s headphone audio perfectly synchronized.

Use headphones, then give OBS a separate output

You need a PC running 64-bit Windows 10 or 11, a microphone and headphones. Headphones help prevent playback from being picked up by the microphone and causing echo or feedback. An ASIO-compatible audio interface and wired Ethernet are recommended, but USB and built-in microphones also work through WASAPI, with higher latency.

For OBS, choose a broadcast output device different from the one used for headphone monitoring. The official manual recommends a virtual audio cable: select its sending side as the output in SyncueSong, then select its receiving side as an input in OBS.

Start in My Room before inviting everyone

The open beta supports up to 10 people per room, with formal release planned around spring 2027. Paid plans for 16- and 20-person rooms are being prepared; they are not available in the current beta.

Start alone in My Room and test your microphone before inviting anyone. When you are ready to sing together, synchronized lyrics let the room follow the same position, while multitrack recording can save each member’s voice and the backing music as separate files for listening back or editing afterward.