Active FETs vs. Step-up phono stage designs


I've noticed quite a few threads on A-gon discussing step-up transformers recently, and it got me thinking of the different applications in the phono stage design. I'm curious of the advantages and disadvantages of designs that employ step-up transformers vs. active designs with FETs, especially in tube preamps. Examples would be the new Manley Chinook vs. the Rogue Audio Ares with its custom Cinemag transformers, or the highly-regarded Andros, which also went the step-up route. I'm thinking of upgrading my solid stage phono preamp in the near future, and would like to hear your opinions (and I know we have a few designers posting regularly) regarding this subject.

actusreus

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There is no general rule for a specific Design. You will find good ones, you will
find bad ones, you will find right ones, you will find wrong ones and every
designer will tell you why he went that way and not the other one....:-)
To design a good Phonostage which sounds like the real thing is quite a task,
specially when you need higher gain. The main problem today is profit and
good parts are simply expensive, see resistors, caps, wire and so on and when
everything will be tested in a lab, the costs can ruin the mark up. Hyping is
more cost efficient and it works also pretty good today.
I used for a lot of years high gain transistor stages, now I am with SUT's based
units. Here it is the comparable problem, the normal SUT's are in general cheap,
lousy and horrible from the datas. But the price counts. Top SUT's which have
excellent datas, superior channel separation and uncolored sound, they exist,
but no one buys them. Too expensive for "High End" units. No matter how much
money you are willing to spend, you don't get it. Professional Users, yes, they
do, but they tell the manufacturer what datas they want to have and they pay
the price for it..