Best sub match for Dynaudio 1.3 SE?

Looking for subwoofer to go with my Dynaudio 1.3 SE. Price range is open. Have Plinius 8200 integrated amp.
Room size is 24' x 18'.
Hi Mrrita,

I'm afraid I'm not familiar with Dynaudio 1.3s other than by reputation. However I own a REL Strata 3 and I've found it to be powerful enough and easy to integrate. Mine is currently supporting Spica Angelus speakers, which go quite deep but are very lean in the bass. Adding the REL made the music much more enjoyable with its crossover set at 30Hz. It's very fast and not noticeable as a separate subwoofer until it's switched off, when you really appreciate the difference. I haven't tried any other subwoofers, but the REL is good enough that I haven't felt the need to.

Good luck with your search
Dynaudio makes a Contour Series Sub that would mate perfectly with the 1.3Se. It's pricey, however, at around 3k new and I've yet to see a used one listed since its introduction nearly two years ago.
I've used a REL Storm III with the Dynaudio 1.3SE and liked it very much.
REL is always a safe bet if you do not have the ability to demo different brands first. They integrate well with almost any system, and are very musical.