I don’t know how popular this new technology is today, but I bought an M-2 version for $299 p.
Visit their website to see what this is all about.
http://subpac.com/I can tell you that listening to ANY music, but especially classical organ music will never be the same.
You simply put this cushion/speaker between your back and a chair (or you can get a backpack version).
Hookup 2 wires...then FEEL bass like never before (unless you were in a church).
Great while practicing or listening.
With a 30 day money back guarantee, it is well worth see if it is for you.
Regardless of your musical preference, this experience is amazing.
No, I don’t work for them. But I sure love this unique approach to ear-saving bass, without the Boom.