Hey Baldadi,
It’s not designed for it, but the H90 will drive headphones with just a y adapter on the stereo outs and an increase in the P out gain (10 to 12dB is usually enough).
Also, I have posted a program list on Patch Storage that tries to approximate a Fender blackface amp sim using the EQCompressor algo. I have used it for convenient noodling with the H90 alone and it might even save me in a pinch someday. I don’t pretend that it is as good as a real amp sim and I agree with your request/suggestion. But this imperfect option is available now.
