G'day mobbaddict and spideyman409
The Little Dot MKV drives the DT880 fully as far as I can determine, and together with my HarmanKardon CDP produces an excellent sound. Night and day difference is always a tough claim (Diminishing returns) however all I can say is there is certainly a significant improvement from underamped. I can't really comment on any other desk top amps, as I haven't owned any others. The AD900 is an excellent headphone, it has many similar traits to the DT880, but it does have a different sound signature as you would expect. I do prefer the fully amped DT880 over the AD900, however the AD900 from a portable source certainly goes with the DT880, and I would agree that the beyer can sound a little flat, or less dynamic when under amped. The AD900 performs well straight from a DAP, however the sound does improve with a portable amp, particularly bass impact. When I am comparing good/great fons, it really is hard to say this headphone is better than that headphone, they simply just have a "different" sound, and then you are talking taste/flavour/preferences. The AD900 might even have the edge over the DT880 from under amped sources. I think they are both excellent headphones, both give me a fair bit of musical bliss. The DT880 driven from a decent source with a powerful enough amp is a great sound, the AD900 from moderate source/amp is a great sound and unbelievable bang for your buck. For me the DT880 is the preferred fon, but the AD900 is great value and still an excellent headphone and definately the way to go without investing in a desk top amp. For me, it was the step up from my DAP to a decent CDP that put the icing on the cake sound wise with regard to the DT880. The AD 900 and DT880 are two of my favourites. Great sound stages, detail, sweet mids, solid bass impact without being over bearing, and both have great high ends. They are both very well balance across the sound spectrum IMO. The DT880 does need a solid source and amp to shine (and they do shine) the AD900 goes well from moderate source/power and isn't miles behind the more expensive combination.