As I recall, these receivers had a darn good phono preamp - nice FM tuner, too. I would have no problem using the Tandberg's phono section while auditioning possible replacements...
I once used a 2025 (if I remember the number right--it certainly was not the 2075, so take what I say with a bit of salt) as an interim amp. From my memory, the phono section wasn't too bad--in fact, it was probably better than many ultra-cheap modern phono amps. But, at the same time, I didn't feel that it was as good as the section in my Linn Intek. (I actually used the Intek for the phono section, and the Tandberg for the line stage preamp section and power amp.) In addition, I have a feeling that the phono section in the Tandberg was happier with higher output MM cartridges--although I never tried anything else.
The FM section was good--miles better than many modern tuners.