Hi Tony.
I believe the two references correspond to the same product. My Midnight Blues 4k was purchased in Germany and I found no other with your exact reference. Out of the context of using it with the Tyros, it easily outperforms not only the SM58 but the Beta 58 as well (an improved version of the classic the SM58), at nearly half of the Beta's price!! Actually I find the results similar to the ones I obtain with my much more expensive Shute Beta 87 A (about 4 times more!), and I'm really stunned with my finding. I also believe that it's a matter of luck that it seems to match my voice better (not a strong voice at all) than other mics. And it doesn't have the disadvantage of needing an additional phantom power supply. Yes, it should be a great mic in the studio, but even in a live situation I already realized that this mic seems to resist better to feedback. And it seems to match the Tyros better than the Shure (cleaner harmonies). What a great buy! I hope I manage to post some kind of comparison soon.
-- José.
[This message has been edited by Route 66 (edited 12-20-2004).]