DM K20? Killer little amp.Just ask joecool
I may have lost mine! My sister in law was by over the weekend, and I showed it to her, she thought it was so "cute". I told her to take it home, and play with it for a while. My wife talked to her on sunday, and she couldn't say enough about the thing, maybe wondering if it was for sale.
I suggest you leave your little DM as is but add an external speaker jack which cuts the internal speaker off. Then you build a separate 2 x 10" or 2 x 12" cabinet, which will be 4 ohms, what the DM needs, and use it as a head. It will surprise you, both with increased volume and body.You can still carry the little one anywhere you go if gig does not merit hauling extra weight/bulk.Best of both worlds.