Small test result. Walker Validpoints under my preamp, compared to the stock feet, resting on the stone shelf. NB I am not able to do quick A/B comparisons. The preamp is too heavy and my back too poor.
First impression: this is larger. More distinct. But less treble, or softer treble? No. And softer more mushy bass? No not at first, at least. So the first test, plus one for Valid points, but with some unexpected results.
The Valid points are three large and heavy brass spikes that go into damping discs on the shelf. They rise the component and are undoubtedly good for ventilation at the bottom. Sonic results? Not sure yet. But I am sure these footers do something, they do have an affect. Walker have thought about this.
My Einstein The tube mk2 preamp is a one-box design with two massive power supplies in the front, and tubes at the back. A hybrid tube/s state design. The s-state power supplies get very hot, and I guess, these are the main cause of vibration (even with top German design). So I used two validpoints, one under each transformer, in the front, and one in the middle at the back. We'll see, if this works out. Like I said, my first impression was a bit mixed.