isolation

If you move a wire in a magnetic field, it will generate a current. All the wires in you equipment if they move are generating new signal into your equipment. Unfortunately nearly all isolation devices have a resonant frequency down to which they help and below which they hurt but their effectiveness varies. Some devices combine multiple materials with different resonant frequencies.

Unfortunately, there is no real guide as to what will be best for your system and tastes. I would not recommend trying cheap and soft isolation. I hate the sound of wood, but you may like it. A big piece of granite at least 3" thick in a sand box is good and cheap. I have yet to hear a rack that is superior to my Mana stands used at level 5.

Pjl2122
You really owe it to the readers of this thread to disclose your status as an SRA dealer.

Many people rely on these threads for unbiased and objective information.

One of the best inexpensive isolation materials available is corion,used by carpentry shops that specialize in retailing counter tops.It is extremely dense and has properties well suited to the elimination of vibration.Some retailers will have surplus pieces available which you can get cut to your specifications.

Ive played with isolation, and it gave me negative effects. Subtle, but noticeable negative effects. It became bright and lost some weight to the sound while everthing else sounded the same. Im happy with the stock feet personally. At least in this setup(all ayre)Maybe next time, it will be for the better.

Thanks Tbg, that's what I meant to say.