I've been using a Dspeaker anti-mode 2.0 as a bass pre-amp and it has a remote - I use it constantly to adjust levels between tracks. You can also use it for room correction when you add the sub.
You could use MSB sub isolators to add a sub to the signal chain, but they are kinda expensive, especially if you get a pair.
You could use MSB sub isolators to add a sub to the signal chain, but they are kinda expensive, especially if you get a pair.