At $9750/pair, Tetra's 506 ain't cheap, but they sounded awfully good with Dissun's Original electronics. An 8" midrange/woofer and a 1.25" fabric-dome tweeter were making pretty music in this rear-ported design. Wynton Marsalis and Herbie Hancock have already purchased pairs, we were told. We asked, "Where's [Tetra's designer] Adrian Butts?"
"Oh, he's with Keith Richard this weekend voicing a new loudspeaker."
We had to ask.