Klavis Twin Waves MKII firmware

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Latest firmware

1.35

Download firmware from klavis.com

Updater: See the update steps below
Manual: User manual (PDF)

Last checked 26 Oct 2026

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Klavis Twin Waves MKII manual & official pages

Klavis Twin Waves MKII user manual (PDF)opens in a new tab — klavis.com
Klavis Twin Waves MKII on klavis.comopens in a new tab — klavis.com
Download Klavis Twin Waves MKII firmware from Klavisopens in a new tab — klavis.com

How to update the Klavis Twin Waves MKII

Download the firmware zip from the Twin Waves MKII product page and extract the .wav file. Connect a mono or stereo cable from the headphone output of your playback device to the Twin Waves FM/AM input and set the playback level to about two thirds. Hold the Osc2 and Sync buttons while switching on your case (or press them within the first half-second after power-on): the green and blue LEDs flash. Play the audio file; the display fills with dots and a message confirms the update. Press the encoder to restart. If the red LED stays on, the level is too low: stop, raise the level slightly, press the encoder and play the file again from the start; if nothing happens at all, lower the level a lot and restart the procedure.

Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.