I sprang for them! They’re a perfect width and depth for the Topping d90se (middle rack). I have the iFi Neo Stream network streamer on top and the iFi Pro iCAN Signature amp on the bottom. There’s enough space above and below to allow heat to disperse.
Their only downside to me is their rather precarious floating/detached feet, that are secure once you get them all aligned, but take some futzing to get them there. Once you have all the columns set on the feet, it takes some messing around to move the unit if it isn’t lined up perfectly—they don’t scoot easily.
The headphone mounts are BRAINWAVS—they adhere via 3M tape and once set they hang on for dear life. They’re deep enough for just about any headphone.
BRAINWAVZ Hooka The All Metal Headphone Stand Hanger https://a.co/d/886WKsq
The headphone Omega stand is a knockoff of the original Sieveking version, and for 1/10 the price looks and feels perfectly premium. Some other versions have a lacquer that can stick to the leather pads of some headphones and tear off their surfaces (!), but this particular brand does not.
Wood Arch Headphone Stand (Walnut Finish) TEKLINE Model: ASONA https://a.co/d/3f21dFt