A month or so ago, before I got the 3BX and the DAK-1, I had a problem with a very low frequency 'howl' at high volumes. After I added the 3BX and the DAK-1, the howl was partially suppressed in an odd manner. It almost sounded like it was a rotational issue with the platter, but it didn't coincide with the actual rotation. What was happening is the howl would start to develop, then the combination of the processors would quell it, then it would start again and cycle like that at high volume. I also noticed that tapping on any part of the very long piece of IKEA furniture that the turntable sits upon would 'ring'. So I got to thinking, "Ok, we have the big piece of granite underneath the turntable so that it has lots of mass and isn't susceptible to footfalls, but this low freq howl is coming through, how do I further isolate?" And so I dug in my junk drawer and my garage and came up with this solution. Ringing gone. Howl gone. Tight, low bass. All is good with the world! The only pitfall is that the turntable is slightly more susceptible to big footfalls, so I have to be careful that I don't dance like an idiot right in front of the turntable. I can live with that.