Dear Perrew, I do use an all tube design fully balanced differential phono stage with high gain.
Its my design - not a market product.
Syntax, Heradot, 7 other friends of mine and me we have had all very good experiences with the Lamm LP2 (stock and modified), Klyne, Cotter Phono, Tom Evans and a Kaneda design in various set-ups.
The virtues of the FR-7x/FR-60 steel tonearm combination were apparent in all these set-ups - different, but always clearly audible.
Among these I would favourite the LP2 but with several important modifications (the very first step being replacing the standard tubes with WE 417a - and putting a 1950ies black plate RCA rectifier into the LP2).
Hope this info is of any worth.
Cheers,
D.