MIDI-OX is dead. I built the browser backup I wanted for my rack.
Every vintage synth owner hits the same wall eventually.
You finally get the Juno-106 dialed in. The DX7 bank is perfect. Then someone mentions the battery, or a rental gig, or a client machine on the bench — and you realize your patches only exist in RAM and your backup workflow is a Windows laptop running software from 2003.
I built knob.monster because I wanted one place to dump, search, and restore SysEx from real hardware without drivers, VMs, or another abandoned desktop install.
What it does:
- Connect over Web MIDI in Chrome or Edge
- Back up banks byte-for-byte from the synth
- Search patches by name across your vault
- Flash back to hardware with pacing tuned for slow 8-bit CPUs
- Export .syx anytime
Dedicated parsers for DX7, Juno-106, M1, Jupiter-6, CZ-101, plus generic support for everything else. Free tier to try. $39 lifetime for hobby use. $399 Studio for shops and rentals.
Early traction has been better than I expected for such a weird niche:
- HN discussion on our Web MIDI timing post did 50+ points
- Beta users are already stress-testing Prophet, JV1080, and Triton dumps
- Repair and rental shops are reaching out from LA collections
Still bootstrapped, still solo, still shipping parsers when real hardware shows up.
If you have a rack and no backup habit yet, try it free:
