The Katana 50 MkII has AUX INOk. For $300 you want a modelling amp you can jam with. That limits your options a lot. I assume you'll have to go used. I can't think of a new amp that would cover all that.
9th??? what you got in the works?TUBES! Nothing over 5W
1W is too loud for an apartment. A lot of tube amps 5W and under can work with headphones and/or have a line out.
But not one of my (8, soon to be 9) low power tube amps will do modelling (a few can do speaker emulation.) I'm OK with that
In March I ordered a Joyo JTA-059th??? what you got in the works?