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

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.

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?

Thanks for all your responses. I try not to inquire directly to the manufacturers as they inevitably have a "colored" view of their own products. But Ralph or Allen are prefectly welcome to reply to my thread.

Do any of you know how quiet the line section of the MP-1 is? I have heard the VSE preamp is dead quiet.

Thanks Ralph, appreciate your input. I will contact you by email.