Arturia MiniBrute User's Manual 14 6 Legal notes
Once the synthesizer has reached its running temperature, tune it to pitch. Use an
external tuner to check the instrument’s tuning; if needed, tweak the Fine Tune
knob to tune the MiniBrute to the desired pitch.
The MiniBrute has been designed for rock-solid pitch stability when operated in
normal temperature and humidity conditions, at external temperatures between
20°C and 32°C in temperate areas. In practice, the MiniBrute provides satisfactory
operation over a much wider temperature range, although extreme external
temperatures or fluctuations can lead to longer stabilization time or erratic tuning.