Hello,
The H90 does use unbalanced TS connectors for the input/output jacks. You should be fine if using a TRS > XLR cable for the output connected directly to a PA. You could also get a TS to XLR cable but that probably would not make a difference compared to the TRS > XLR cable.
A DI would be a good option if you run into any issues with the TRS > XLR cable.
