Where can I look for the gear Jason Suwito uses?

Find and submit the pianos, keyboards, synths, microphones, and other instruments used by Jason Suwito.

If the artist is active on social media, check places like their Instagram feed and look for musical equipment they can be seen using.

You should also do a Google image search for things like "Jason Suwito studio" and "Jason Suwito live" and spot gear that way.