Partsexpress.com has great selection and sizes, and they are speaker and home audio based sheets for the actual purpose, used in many hi-end components, they also carry dynamat with the metal backing that I found very good as well, but you could just go to best buy and get that, it is all very cheap from parts express however at about 1.50 10" X 10" sheet.
Looking for a source of vibration dampening sheets
I want to experiment with some chassis vibration dampening. I tried a search here but it didn't turn up much. I'm looking for a source of good quality vibration dampening sheets for my CDP and preamp. What do I look for and where is it available? Thanks for your help.