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mpc-tributary

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Tributary plays one Elektron Overbridge output per Akai MPC plugin track over USB.

mpc-tributary is custom firmware for the Akai Professional MPC Live, by @stampman3000-jpg. Open source under GPL-3.0, latest release v1.1.0 (October 2026).

forAkai Professional MPC Live·by@stampman3000-jpg

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Download v1.1.0

Tributary-1.1.0-mpc-armv7.zip· 556 KB· +1 file

GPL-3.0· stampman3000-jpg/mpc-tributary·downloads come from the creator’s GitHub releases

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  1. v1.1.0Latest2 files

    One Tributary can sum the outputs you switch on, onto the MPC track it sits on.

    The switches come from the connected machine. A Digitone II still shows MAIN, ACTIVE, 1–16, DLY, REV, CHO, and IN. A Digitakt, Syntakt, or the other listed machines show their own names. A fresh copy starts with Main on. An older project that saved a single source opens with only that output on, so leave Main off when you are splitting the machine across tracks.

    The USB cushion is the one measured on a Digitone II: about 4 ms behind the newest sample, walked back gently when it drifts.

    CPU bench on an MPC One running MPC OS 3.9.1.2: worst p99 2.5% of one audio block, worst block 5.1%, verdict PASS.

    The armv7 zip is for a 32-bit MPC (One, Live, X, Force). The aarch64 zip is for a 64-bit MPC. Both were packed with sd88me/mpc-vst-plugins tools/release.py and passed tools/catalog_check.py --catalog.

  2. v1.0.0Tributary 1.0.01 file

    Digitone II is the machine this has been heard on. Other Overbridge devices are listed and untested.

    • One stereo pair, or one mono channel copied to both sides, on the track the plugin sits on. Copies share one USB read.
    • Use the MPC as the clock. Clock from the Digitone wobbles, because it shares the USB cable with the audio.
    • A few milliseconds of latency remains. The plugin cannot delay the other tracks.
    • This zip is the 32-bit ARM build. Its installer writes pluginList-arm. The same source builds for AArch64; that package writes pluginList-arm-64bit.
    • GPL-3. Channel maps are facts from Overwitch by David García Goñi, also GPL-3.

    Demo: https://youtu.be/QJIlWZKR8m0