Are Atma-Sphere MP-1 and VSE RTP-3D similar?

Look similar except for the dual volume control and tube comliment. I'm thinking of purchasing one of them.
Dracule1 (Reviews | Threads | Answers)

They look nothing alike internally or externally, IMO. Also, they each use completely different tubes, as you mentioned.

I know from personal experience that Atma-Sphere provides exceptional customer support, and the company is in the USA, if that makes a difference to you.

Vacuum State is also highly regarded from what I have read.

Thanks Tvad,

I have never seen the internals of the MP-1, so I was going by the fully differential balanced topology both preamps have. Do you know a site that shows the internal of the MP-1?

Yes, the Atma-Sphere has the advantage of being a US company with excellent support. I heard VSE support can be spotty, but the RTP-3D is a beautiful preamp.

I don't think I can direct you to a photo of the MP-1 internals. I own an MP-1, so I have the advantage of being able to compare.

:)

Tvad, looks like you've owned or currently own several tube preamps including the ModWright and Supratek. Can you give a comparison between the MP-1 and the others?