Picked up a pair of AKG K240DF's on CL for my 2230. Great warm sound, with detailed highs and punchy mids. I was expecting a bit more in the soundstage, but perhaps my expectations were too high (as compared to my KG4s). If you're looking for bass, the AKG semi open over the ear units won't do it for you. But for me I'm loving these. Great quality build, too.