Music lovers who chose panel speakers (electrostatic, magnetic planar, or ribbon---I have all three) because of their ability to make music sound more real than any box speaker, have for decades had to choose between disconnected, bloated deep bass, and no deep bass at all. The fact that there is now a woofer system (the GR Research/Rythmik OB Servo) that is good enough for use with the best (but deep bass-shy) speakers in the world is a huge deal. I'm so happy I managed to live long enough to now be able to hear reproduced music as never before. Excuse me, I have to play some more music!