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


Can anyone explain difference in topology between these two preamps? Look similar except for the dual volume control and tube comliment. I'm thinking of purchasing one of them.
dracule1
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?
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Dracule1; why don't you give Ralph(Atmasphere)a call and talk with him on your concerns; he will answer you honestly and will not jam his gear down you throat to get a sale; this has been my direct experience.
I second Rleff's suggestion. Among other reasons, Ralph and his crew are one good reason to own Atma-sphere equipment.
Ralph & Allen are both superb. One difference is that Allen's phono section is hybrid, as compared to all tubes in MP-1. VSE quotes high 70db gain w/o a step-up transformer. Not sure what the gain structure is in the current MP-1 phono. Also, the MP-1 has a circlotron-based LS.