Went down to Audio T with a view to purchasing the R cube as I wanted the portability of the Arcam but more importantly was looking for the detail that the Arcam was known to produce. They set up the Arcam and Zeppelin Air in a listening room for me. I was there for over an hour switching my ipod between the two. The first difference you notice is the zeppelin's base, it is deep and powerfull without being overpowering. The Arcam did show a bit more detail on certain tracks but the zeppelin was impressing me more, it seemed to draw you into the songs and envelope you in the music, it was just a more enjoyable listening experience. I was trying different types of music hoping that the Arcam would impress me more as I really wanted the smaller dock and portability of the Arcam but after an hour I admitted defeat and went home with the Zeppelin as the listening experience was to enjoyable not too. One thing I would say in the Arcam's Defence was that Arcam say being a cube it sounds best placed in a corner where the sound can bounce of the walls which I wasn't able to do.