The Acoustic Ramp got mentioned in Tape Op as a preview for a review to come in the next issue. Here’s the quote:
In the next issue, I’ll tell you about my friend Hendrik Gideonse and his patented Acoustic Ramp Diffusor available from Redco. To put it succinctly, I was blown away by how effective his diffusor is. Even in a small room, it can do wonders, and its beneficial effects reach down to frequencies much lower than you’d expect from a diffusor. In the meantime, read Hendrik’s blog at www.xix-acoustics.com.
– Andy Hong, Gear Reviews Editor, Tape Op