Ableton Forum

Essentially I want to be able to tune Ableton down to 432 or up to 454.

I want a standard 12-tone scale where I can adjust the pitch of the centre A.

What's the optimal tuning algorithm for this? Also, why doesn't a 'standard' file exist in the tunings menu?

Load the "12-TET (EDO)" tuning, and change its reference pitch to whatever suits you.