sub for Dynaudio Audience 42

We often have our customers mate the Dynaudio monitors with the Dynaudio subs. The Sub250 or 300 would be what I would recommend.

The Dyn subs do not get the press like some others here, but they are scary good and flexible. My personal system has dual Sub500's with Dynaudio C1 monitors. I have no desire to try something else.

There are high and low-pass filters on the sub, so you can limit the strain on your mains. You can dial in by ear or use a meter.

http://www.dynaudio.de/eng/systems/lines/subwoofer/sub250.php?sid=430f2b96abd98#

The Rotel CD players are pretty good little players. The Rotel receivers aren't bad either, but like so many other receivers on the market, the amplification gets the short end of the stick. Plus, Rotel does not have a neutral sound, it can be characterized as being somewhat dry imho. Still, better than a lot of others out there, though.

If I were to recommend a separate amp for the 42's, I would probably direct you to the Parasound Halo A23, it is a fabulous little amplifier that will drive the 42's wonderfully. We've been using the Parasound Halo's with the Dyn's for years now and when on a limited budget, I cannot recommend anything that would outperform the Halo's.