Active vs. Passive Step-Up Devices


I would appreciate all thoughts regarding the relative strengths and weaknesses of active vs. passive step-up devices. My cartridge output is 0.25 mV.
128x128wellfed
They can both be good. When using a tube phono stage, there is a great demand for quiet tubes when there is very high gain. This can cause some expensive tube buying. If you use a good quality step up transformer, it puts less demand on the noise factor in the tubes, because you'll get 20 db more gain, before it hits the tube phono section. With less gain needed from the tube section, the noise problem is less critical. With solid state phono sections, noise is less of a problem, but I think tube phono sections sound better, when they are done right.
Wellfed...The Signet transformer that I once used was about the size of a beer can. Lot's of luck getting it inside a preamp!
I will be using Graham Engineering transformers and I have been told that they will fit. Jensen transformers and the Stevens & Billington TX-103 will fit as well, I'm told. My preamp chassis is about 6" high.