I have never heard the 5.1, so I can't comment on that.
Maybe it's the DHT tubes, but regardless, all Lampi's I have owned present a large, fairly 3D soundstage. As I went up their range of DAC's, the stage got a little bigger, but the biggest difference is in the increase in musical information and details, which provide more of the "you are there" presentation and feel to the music reproduction. I have the Pacific now paired with the Taiko Audio Extreme server, and the results are pretty great, as close to "live" as a system has sounded to me.
Maybe it's the DHT tubes, but regardless, all Lampi's I have owned present a large, fairly 3D soundstage. As I went up their range of DAC's, the stage got a little bigger, but the biggest difference is in the increase in musical information and details, which provide more of the "you are there" presentation and feel to the music reproduction. I have the Pacific now paired with the Taiko Audio Extreme server, and the results are pretty great, as close to "live" as a system has sounded to me.