Atmasphere mp1 mk3.3 with phono

I think you should PM Audiogon member Pstores. He has a lot of firsthand info on Atma's.
Of course, calling Ralph(-Atmasphere) directly would provide the most accurate info.

When I had Ralph build my MP-1, I had them install V Caps (as per Pstores advice).
Bob

Bob... thanks for the heads up.  Did you get the resistors upgrades?  I have the v-caps on my preamp, it’s very nice.  

I have Both Pre-amps, Plus the UV1. I have owned a number of many other Pre-amps. VAC, VTL, Accuphase, Audio Research, MC, Jardis,Etc etc.

The MP-1 by far is the best I have had, mine is fully optioned with all possibly upgrade. Once you have dialled the pre-amp in with the quiet Tubes (Stay away from NOS) you will never bother looking at another pre-amp regardless of cost or technology used.

The MP-3 Fully optioned is not far behind but obviously no match either.

@zipost ,
My MP-1 doesn't have the Caddock resistors.
Though I have to say is holds it's own against an Ayre KX-R.
So, when moneys become available, I will upgrade the KX-R to Twenty status and the MP-1 to include the Caddock resistors-and any other upgrades Ralph might recommend.
Bob