Uber - I used
Plast-I-Clay Modeling Clay. I bought 8 lbs. from allartsupplies.com for a little over 20 bucks. I didn't use it all and gave what was leftover to my grandaughter, so it was a nice "two-fer"!
The QL-Y66F stock feet are small and springy. I have springy floors and it was a bad combination. The MNPCTECH feet are big and heavy and seem to be well damped.
I did both mods simultaneously, so I can't say which one had more impact, but before the mods I could not turn up the volume very loud at all without getting feedback from airborne vibrations. Now I can play as loud as I want with no negative effect. I also had to tiptoe across the floor, and since the mods, I don't think I've ever made the tonearm jump from footfalls.
The QL-Y66F stock feet are small and springy. I have springy floors and it was a bad combination. The MNPCTECH feet are big and heavy and seem to be well damped.
I did both mods simultaneously, so I can't say which one had more impact, but before the mods I could not turn up the volume very loud at all without getting feedback from airborne vibrations. Now I can play as loud as I want with no negative effect. I also had to tiptoe across the floor, and since the mods, I don't think I've ever made the tonearm jump from footfalls.