Chorus is now available to all ToneWoodAmp users as an optional replacement for Overdrive.
It's available via USB update at files.tonewoodamp.com
The update requires that your TWA run firmware version 2.69. ToneWoodAmp units running prior versions can be updated using the same update utility linked above.
Changes to firmware found in v2.69 can be found here: https://support.tonewoodamp.com/a/solutions/articles/17000044840
If you have any questions, please reach out to us at email@example.com