Save Audio (Advanced)

This is the save node you should be using. SaveAudioAdvanced, added to ComfyUI core in June 2026, is the consolidation of the three legacy savers - FLAC, MP3, and Opus - into one node with a format dropdown. The old trio is still around and marked DEPRECATED, but there's no reason to use them in a new workflow. Everything they do, this does better, from one place.

The reason it exists is that the save family had quietly become a mess: three nodes doing the same job with different codecs, each with its own quirks. The fix was a single node where the format is a parameter instead of a node identity. It's the kind of cleanup that says ComfyUI finally considers audio a settled, first-class feature rather than an experiment.

How it works

Same save architecture as its predecessors - AUDIO in, file out to your output/ directory, counter-appended filenames, subfolders created from your prefix. What makes it different is the format input, which is a dynamic combo that changes the available options depending on what you pick:

• flac - lossless, the archival choice. No extra settings.
• mp3 - lossy, with a quality sub-option: V0 (default), 128k, or 320k.
• opus - the quality-per-byte champ, with quality sub-options 64k through 320k (default 128k).

Pick the format, and the node shows you only the settings that apply to it. That's the whole point - no more choosing between nodes based on output format.

Inputs and output

• audio (AUDIO) - the track to save.
• filename_prefix (STRING, default audio/ComfyUI) - output path prefix. This one also supports formatting tokens like %date:yyyy-MM-dd%, so you can bake the date into the filename - handy if you're saving a batch of generations you'll want to sort later.
• format (dynamic combo) - flac, mp3 (+quality), or opus (+quality).
• audio (AUDIO, output) - passthrough of the saved track; you don't need to connect it.

Getting it

Ships with ComfyUI core. It's a recent addition (June 2026), so if your ComfyUI is older than that, update - you'll get the node and its save-helper backend in the same bump. Nothing to install, no models.

Common issues

The recurring save-node error applies here too: "input audio is None (source video may have no audio track)" when whatever feeds it produced no audio. Fix upstream, not here. Otherwise the node is refreshingly boring. The only real decision is format: FLAC for masters, MP3 for compatibility, Opus for size - and now that decision happens inside a single dropdown instead of across three node types.