Trip to this rabbit hole started from one article which is in Finnish. It was good article and I wanted to know more. If you don’t want to watch the videos the debate is briefly should instruments be tuned based on 440 Hz standard or based on 432 Hz which should make the world futuristic utopia. There is lot of nonsense on 432 Hz tuning. You can find it explained in linked videos or from this article. If we drop all the nonsense fact is that some classical music is performed using other tuning than 440 Hz. Some is tuned lower and some is tuned higher.
I started to wonder could I actually change to 432 Hz tuning if I wanted. I have tuner which I can set to 432 Hz. So everything without digital control and autotuning can be set to use 432 Hz tuning. This include guitars, basses and fully analog synths. If there is digital control that is set to 440 Hz standard. With those instruments it is matter tuning them down correct amount. Question is can you hit 432 Hz tuning. It should be on range because it is so close but hitting it exactly may not be possible.
This is point where we come to fact that non-digital instruments are never perfectly in tune. With digital instruments we like to detune them a little and make pitch drift to make them sound better. There might be people who prefer perfectly tuned sounds but most liked synths tend to be ones which have pitch drifting and people use it to make them sound better. It would be hard to make good sounding music hitting perfectly those magical frequencies and keeping them.
I tried to google which of my digitally controlled instruments I can easily change to use 432 Hz. So far I haven’t found I one. There is one. Pianoteq which Adam Neely uses in video below. I didn’t try to google it and I have lighter version of it which don’t have those tuning options. I might not be using correct search words. Whole point of 440 Hz standard is that instruments can easily sound good together. It makes using other tunings difficult.