I got great results mass loading the power supplies of my Soundlab U1 speakers with two twenty five pound bags of lead on each. The Aesthetix tube preamp and phono did not respond well with this, but later trials on my power conditioner and subs were beneficial. I agree this should be experimented with, and probably with varying amount of weight.
Cheap Tweak..Mass Loading
If you are dissatisfied with the sound of your system, try this before spending big bucks on upgrading of audio components. I borrowed 3 bags of lead shot (25 lbs) each from a friend and placed one on each of my 2 power conditioners (one for power amp and analog sources and one for digital) and a bag one my power amp. The improvement in sound was very dramatic, bigger than component upgrades that I have done in the past. Soundstage is huge with more depth. Dynamics at high listening levels is unbelievable. Resolution and detail at low levels is amazing. The bass is so tight it's like a sledge hammer hitting you square in the chest. For $45 I have seen a much bigger improvement in my system than I ever dreamed that I would. If you have not mass loaded your components..Do it!
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