Audio racks that can handle heavy components

+1 SolidSteel

Solidsteel is excellent. Purchase once and be done. 

Stay away from Boltz.  I ordered some CD racks 9 months ago and they never delivered.  Ended up cancelling order and going elsewhere. I had previously ordered numerous products from them. I have some great amp and stereo equipment racks from Steve Blinn (Blinderman) but not sure he is still in business. There are still a lot of his racks for sale on the internet. He was a great guy to work with and his stuff was well built and engineered. 

One of my Steve Blinn racks is supporting a 150 pound (approximately) BAT VK-600SE power amp and looking good doing it with 2 inch thick maple shelf supported by a beautiful, extruded aluminum structure.

I'm Looking for something more....furniture style.  Gotta keep the wife happy after spending $30k on a freakin' stereo.  (yes, we have an expensive hobby but it's no worse than building a muscle car.  Once you start down the rabbit hole...)

We have a Dutchcrafter solid wood bookcase and I need something more vertical.  Thanks to everyone who posted here.  Lot's of good info.

Allow me to add Nikola Woodworking; 

https://www.etsy.com/shop/NikolaWoodworking?ref=shop-header-name&listing_id=1130090283&from_page=listing