You never see this anymore

Cello failed. So does taht mean the idea is of no value?

That is what a dealer is supposed to do for a person.
Not many folks here would bother with someone else tellingthem what to buy.
Just about everyone here is mix and match on ones own.
With varying degrees of success: (based on all the for sale ads...LOL!)

Cello was run by Mark Levinson after he sold his name! Was a marketing genius, he recruited a friend of mine to sell for him in that era. Some of the Cello gear was really good, most was marketing and sales though!

Mark did the same thing with Red Rose - I believe he had a dedicated studio in NYC. However, much of the stuff had a more than superficial resemblance to much cheaper stuff made in China, which I would imagine put some people off. Whether it was actually the same, I couldn't say.

There may not be a manufacturer, but there are companies that do it such as Ciamara.

Hey, where have you been. Just drop into a B&O store, and be sure to bring a fat wallet. There sound is always great and you can bring it back within 90 days if you don't like it. I have such a store in my town and do drop in for a listen, every once in a while. Oh, yes I have hi end brick and mortar store in my town but never go there anymore. Why? They know nothing about great customer service.