ATMA SPHERE SCHEMATIC for a UV-1 M/M.......

timlub,

Well, I suppose he will endeavor to make the change with info Atmasphere can provide, send it to Ralph to do, or sell and take a different path. His choice. He wants a phono and the pre-amp does not have one. I agree Ralph is doing what he can to address the issue and try to make a customer happy which is the most important thing.

Ironically, as I write this, I am similarly working with a customer to help him get a piece of software I provided to do some things he now wants that it was not originally designed to do out of the box. Irony!

+1 timlub & gdnrbob
OP-
1. The info you want is rarely openly available. Just because some of those units had an MM stage installed at the factory does not mean that the manufacturer has ANY obligation (legal, moral, ethical, etc.) to assist you in building and installing one in yours. In fact, most manufacturers would tell you to pound sand, after they reminded you that you would be voiding the warranty.
2. Ralph has given you (as far as a non-tech person like me can determine) pretty much everything you asked for and is offering his time (which has value, to be sure) to assist you further.

If your aim is to trash him, you've failed.  IMO, he comes off as bending over backward to be helpful and you come off looking like a cranky 2 year old who missed his nap! Just my $0.02.

+1 swampwalker

+2 Swampwalker.  The thing that surprises me most is how generous Ralph has been in trying to accommodate a troublesome owner.  Ralph’s emails in this thread contain enough information for anyone experienced with tube preamps to build a close cousin to the Atmasphere phono stage.  Would it be identical?  Of course not.  The types of resistors, capacities and even wire make a difference, a big difference, but Ralph has pretty much told you the circuit details.  That is more than just about any other mfr will do.  By the way, the OP apparently bought his preamp second-hand; he isn’t an original purchaser so the mfr owes him nothing!

+3 Swampwalker.  The OP seems to be throwing a tantrum, indeed, at this point.  Weird.

Sorry you have to wade through stuff like this, Ralph...