I'd like to drop in to mention that I am the recipient of the first 30V Maraschinos, and give a few preliminary comments....
As excited as I was to give the Maraschinos a good listening, I was down in bed for the first several days after they arrived. I set them up in place of the integrated that anchors the bedroom system, and was immediately treated to an upgrade in sound. I have to admit that I didn't exactly know what "locking bananas" were until now, other than a really funny thing to say out loud, but they are in fact a very elegant solution to hanging the amps -- no worries about them taking a tumble. The 30V Maraschinos did a great job of keeping me company while down, but that isn't where I intend them to go....
I got some time in today comparing the 30V Maraschinos with the 60Vs that I already have on my main speakers. My immediate impression is that the 30Vs do, in fact, bring something a little extra special to high efficiency speakers; mine are rated at 97dB. Don't get me wrong, the Maraschinos on 60V supplies sound glorious, but the 30V supplies seem to bring the sound into focus a bit more, without losing any smoothness or sounding in any way forced. I have open baffle speakers that do wonders in enveloping the listener in sound. The Maraschinos both fill the room with full ambiance while allowing the sounds to "pop" right out of space, exactly where they feel naturally placed. High frequencies are ridiculously focused and dead on in attack and decay. The combination of clarity and drive the amps on these power supplies provide allows for as direct a connection to the music as I have had to date.
I wish to do considerably more listening before writing up a full review, and I have some gremlins to chase down (nothing involving the amps) before being able to do them full justice, but so far the 30V supplies do seem tailored perfectly to the moderately high efficiency speakers I am using. To me it's another testament to the versatility of the Maraschinos -- I have yet to find anything they don't excel at, and it seems that this excellence can be dialed in even further with the range of power supplies offered. More to come....