Indeed, you do not actually need an amplifier for studio work. For many years, I used my Line 6 POD 2 as my studio "amp". It worked very well. The only reason I moved to the Spark amp was that the POD2 was limited to the built-in models and that was about a dozen or so, most of which I didn't use because I didn't like their sound.

There are a number of small modeling racks and "pedals", for lack of a better term, that will do a superb job in the studio.

I picked up my POD2 on Ebay for half the price of a new one at the time. Even it has a bass amp model in it that was a favorite of guitar players and it was one of my go-to models.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.