Hmm good question. For guitar you got acoustic amps, but I think for bass you can still use any normal bass amps. I would say a cab with horn/tweeter is mandatory. Maybe a HPF/EQ pedal in front of the amp can help too.
Phil Jones amps pops to mind. There is a thread about this on Talkbass too: https://www.talkbass.com/threads/best-amp-for-acoustic-bass.1288067/