What should I upgrade?

Measure your current room response so you have an idea of what is going on. That will help you understand if room treatments or a sub will help.

Talk to Magnepan regarding if you are under-driving your speakers. Borrowing a more powerful amp to try would be a good idea, too. Cheers,
Spencer

How large is your room?
Do you live in a House or an Apartment?
What type of music do you listen to?
Do you just want to tighten up the bass, or do you want more slam and dynamics?

I believe that your best solution to get a more defined low-end, depends on your answers to the questions above.

Rich

agree with a bigger bel canto..you're almost there.

Hi Rich,

Room size: 17x35
Domicile: House
Type of music: Everything! (Mostly jazz. Jazz seems to be awesome!) It's the pop or rock that is lacking bass/dynamics.
Wants: I'm not sure what the difference is. I think I want both, but more importantly more slam.

Thanks for the assistance!

Devon.

You want it all.., like the rest of us.

That's a fairly large room. I would think, that to add some dynamics and bass to rock music, you either have to get larger panels like the 3.6's or add a sub. I would think that adding a sub would give you more slam and dynamics, than getting larger panels. It's tough adding a sub to the Maggies and having them blend right. Many people here suggest 2 subs to better balance out room modes, and cancel out standing bass waves. But, I would try one first to see how you like it.

Your current amp is fine power wise, 300watts into 4 ohms. However, if down the the line, you want some more refinement, ease, fluidity, bigger soundstage and lower noise floor, then you may want to upgrade to Monoblocks.

I love the Bel Canto gear, though. I've owned the DAC3, and I would think that a pair of Bel Canto Ref 1000 Monoblocks are in your future. I still have a pair now, and I think they're great.

Let the addiction begin..,

Rich