From Soundstage:
Marten's new flagship loudspeaker is the Coltrane Supreme 2, which has a lot of drivers: one 20mm upper-treble diamond tweeter, one 51mm lower-treble diamond tweeter, one 5" ceramic midrange, one 8" aluminum midbass, and six 8" bass drivers. The retail price is $450,000/pair, which we found mindboggling because the appearance and sound weren't all that great.
