sfizz_jack(1)

📦
version 1.2.3 · 2 versions
, in arch rolling

💜 sfizz_jack — the manual, but make it make sense

Okay bestie, so you found sfizz_jack in the man pages and you're like "what is this". Same. But good news: this page is short and honestly kind of iconic. It lives in the sfizz_jack man page, and here's the whole vibe, no cap.

✨ NAME ✨

sfizz_jack — literally just launches a sfizz instance as a JACK client. That's the whole job. Slay.

🎀 SYNOPSIS 🎀

sfizz_jack [FILE] [OPTIONS...]

🌸 DESCRIPTION 🌸

So sfizz_jack takes the sfizz SFZ library and wraps it up all cute in a JACK client. And then — because apparently GUI is not the moment — you control it through a text interface. Lowkey kind of chic, highkey retro. 🦋

⭐ OPTIONS ⭐

  • FILE — an optional SFZ file name to load right at the start. Yes, "firsts" is what the page says. We're keeping it. It's giving typo but we love her.
  • --client_name — the name for the JACK client. Name your child. 👑
  • --num_voices NUMBER — changes the maximum polyphony. That's your voice count, bestie. Spend it wisely.
  • --preload_size NUMBER — how many bytes to preload into the cache for samples. Preloading is self-care. 🧚
  • --state — outputs the state in the JACK loop.
  • --jack_autoconnect — autoconnects the JACK outputs, so you don't have to sit there doing it by hand like it's 2009. 🔥

💅 TEXT INTERFACE 💅

Not me being able to talk to a JACK client through standard input. Yes bestie, you literally can, and the possible commands are:

  • load_instrument FILE — loads an instrument. The main character command, honestly.
  • set_preload_size NUMBER — sets the number of bytes to preload in the cache for samples. Same energy as --preload_size, just now you're saying it to the client's face.
  • set_voices NUMBER — changes the maximum polyphony. Again: same idea as --num_voices, but in-chat. 🫶
  • quit — quits. Bold. Brave. Necessary. 😭

🌈 SEE ALSO 🌈

sfizz_render(1) — yes, the sibling. Go say hi.

💀 BUGS 💀

See the main repository at https://github.com/sfztools/sfizz. (They know. They're working on it. Probably.)

🌸 AUTHOR 🌸

Contributors can be seen on the main repository at https://github.com/sfztools/sfizz. Every single one of them, presumably, being absolutely iconic.

Okay so real talk for a sec: this is version 1.2.3, and the page is dated 2026-08-20. So when you see it in the wild, that's the version to check against — no guessing, no vibes-based version numbers. 🍓

Bye bestie, go make some noise with your JACK client 💖

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