Audiobuilder, I have advanced prototypes of the Appogg platforms in my system in Austin, and am planning to write a review for Positive feedback. The platforms are only now getting to market, so no formal reviews have been written as yet.
I can confirm that the effect of the platforms is very positive. They seem to solidify imaging and staging. They let the equipment yield a little more detail without creating obvious frequency hotspots. In my system the benefit is particularly evident/positive on the TEAC Esoteric X-01 CD player. The platforms are tunable to component weights. The platform under my Jeff Rowland Criterion preamplifier still may need a little tuning as the component may be a little too heavy for the particular unit under it. I have not yet tried Appogg under my Rowland 312 amp.
