I know that you cant plug a bass into an electric guitar amp but I just bought an amp that just says "guitar amp" and it has a bass knob.Can I play my bass on this?
You can plug it in but i wouldn't advise it.
That knob is just used to boost the bass or lower the sound of your guitar.
It's like what a treble knob does except for the bass frequencies instead of the treble frequencies.
Hope that helps
The bass knob controls how loud low pitches are on a standard guitar.