I have an audio rack designed and built by a local audiophile a few years back. The shelves are made from maple and are 1.75" inches thick, they measure 24" wide by 20" deep. The rack is fully adjustable and it's maximum height is 55". The photos show five shelves, you can see the sixth in the photo on top of the highest assembled shelf One shelf is modified with a decorative inset.
The four posts, nuts and washers are plated in gold, yes, real gold. They don't make it sound better but it is cool looking! Nice shape. I have never seen a similar shelf The original owner was a little eccentric about audio.
I am listing this at $400 because it is cool and unique. We can talk but lowballing will get your response deleted. Possible trades? Maybe a pair of 70's rock speakers? Turntable? Cash is preferred.