I'll have to second the Symposium reference. I use rollerblocks under my tube phono stage and under my tube amp. Ultra platform under my turntable, I plan to buy more of their products...very noticeable improvements.
If you want to try something cheap, go to a kitchen store and buy a thick maple cutting board...I bet you'll hear a change.
If you want to try something cheap, go to a kitchen store and buy a thick maple cutting board...I bet you'll hear a change.