Adjustabilty is useful, but in practice, a gain of 60 to 65 with most phono stages will cover most MC cartridges, except the very low .2mv of a few cartridges. That is'nt to say greater adjustabilty is'nt useful, but it is costly and may compromise performance. I too like tubes in phono stages, but you have to accept they are slightly noisier and a gain of 60 is about what you can achieve with tubes. One way round this is a tube/SS hybrid, such as the Art Vinyl reference a J Fet/tube hybrid with Lundahl transformers for MC gain. It is a lovely phono stage giving the best of both worlds IMHO
tubes and analog
I just "upgraded" from a Mac SS integrated to a Prima luna dialogue 2 tube amp. The reason that I changed amps was that i assumed that the tube amp would be a better match for my Zu Druid speakers. The amp change was a big improvment for listening through my CDP....but not so when listening to my Rega P9. I had to switch to my spare SS phono stage (Graham slee) to get it to sound right. I was using a tube phono (AES) with my Mac. In Short, my tube amp with SS phono stage is not really an upgrade from my Mac with Tube phono stage. My question is.....should i consider a further upgrade to a better tube phono pre or is it simply that a change from SS to Tube amp is more "pronounced" in digital playback?