For RME M-1620 Pro D

Set it once.
Sync forever.

A tiny macOS menu bar app that auto-syncs your RME M-1620 Pro D's sample rate to whatever's coming in over MADI. No more clicks at the rack mid-session.

Star on GitHub v1.0 — coming soon

macOS 14+ · Windows coming soon · Free & open source

Connected 172.20.0.1
Device rate96.0 kHz
MADI input96.0 kHz
MADI sync Locked
Recent changes
14:32:08 48.0 → 96.0 kHz
13:15:41 96.0 → 48.0 kHz
11:09:22 44.1 → 48.0 kHz
Auto-sync enabled
Launch at login
Settings…
Quit Synklok

Pro Tools jumps from 48 to 96 kHz. Your MADIface follows. Your M-1620 doesn't.

Now you've got dropouts, clicks, or audio at the wrong pitch — until you walk to the rack and click through the front panel.

Synklok closes the loop. When the MADI input rate changes, it tells the M-1620 to match — within two seconds. You don't have to think about it.

Built to disappear

Three things matter. Synklok does them well, and nothing else.

Set and forget

Runs quietly in the menu bar. Launches at login. Once installed, you never have to think about it again.

Glance-able status

Connection state, current rate, MADI sync, and recent changes — all visible in one click. No hunting.

Built for pro audio

Native macOS app. Open source. No analytics. No accounts. Talks directly to the M-1620's REST API.

How it works

A simple loop, polling twice a second.

Pro Tools
MADIface Pro
MADI cable
M-1620 Pro D
Synklok watches the M-1620's MADI input rate & matches the device rate
Polls
Twice a second when connected
Latency
≤ 2 seconds to match
Connection
USB REMOTE or LAN

Compatibility

macOS
Available
  • macOS 14 Sonoma or newer
  • Apple Silicon & Intel — universal binary
Windows
Coming soon

A native Windows 10 / 11 build is on the roadmap. The core sync logic is the same — only the menu-bar/UI layer needs porting. Star the GitHub repo to be notified when it lands.

Both versions require the RME M-1620 Pro D connected via USB REMOTE or on the same LAN.