We might not know how they work but they do work in the right circumstances and they do make the music significantly better. Whats useful is getting...
Dave, high level connection should give you the best blending between the sub and speakers, this adds the tonal timbre of your amp into the sub path....
Ive only just replaced the azur 641a amp in our system. Pretty decent for the money it was, had it paired with mordants short avant 902i speakers for...