I thought Audacity already had an equalizer function.
You need a cheap, outboard “sound card” on a dongle, then, if you’re doing something specialized like using an electronic “piano” keyboard that can come in extremely distorted, this Peace “API” really insures that you’ll get good sound, like this, actual performance.
https://billkeevers.wordpress.com/2020/05/19/holy-ghost-with-light-divine-mercy/