Let's see.....what gear has disappointed me....
Emotiva ERC-4 CD player. Just......no. Returned to sender.
Any of the Schitt DACs I have auditioned or tried. Just not a fan of the sound, feel or look of their products.
Marantz CD/SACD players. They don't seem to have any kind of signature sound. Meaning, their different models all sound completely different from one another. I can listen to one of their higher end models and it sounds horrible. Then I listen to one that's a few steps below it, and it sounds wonderful. I never could figure how this could be, and in the end, pretty much gave up on trying/caring.