which is better ? MC phono stage or MM+step-up ?


anyone care to share what would yield to a better sound or how they are different ?
Some people i know prefer a stand alone MC phono stage. While others swear by the MM phono stage plus adding a step up tranny for an mc cart.
How are they different and in what way is one better than the other sonically ?
thanks
nolitan
This is were the the word "hobby" truly comes into play. I have a SS phono section with both mm and mc outputs. I always felt like the mm was much better than the mc side. So I started doing a lot of reading on SUTs. I obtained a set of transformers from a gentleman on Ebay and built my own.Wow, what a difference!
Yes you have to deal with hum, but there are ways to do that.
The sound is much more dynamic.The sound floor is lower and the frequency response is significantly wider,especially in the treble.The highs seems to have no ceiling.The bass is tighter and more defined.Everything is more coherent.
That said, the transformers I got were good quality Beyerdynamics with values that worked perfectly for my LOMC.

side bar: I emailed Bob of Bob's devices and he offered a lot of help,even though I am not a customer.I cannot say enough good things for a guy that sells a great product and yet is willing to help a DIY project.I would encourage anyone looking into a SUT to try one of Bob's.They start at a very reasonable price and are proven to be excellent.And of course his support is wonderful.

As for which is the way to go? There is no easy answer. I would say that if you are a plug and play guy that doesn't want to spend any time with tinkering with locating the SUT and trying different cables should go with a phono section. But if you are a analog hobbyist than SUTs are a lot more fun and interesting.In my book, a passive device will always have more POTENTIAL than a active one.But active devices are easier.Much like the passive preamp vs. active preamp.

One more thing.I have noticed that a lot of modern tube preamps with phono sections use jfets for the MC section.Many of the reviews of these preamps recieve high praise for everything except the MC jfet section.If you have one of these,a SUT allows for that nice tube phono section to be used instead of the jfet sound.

e
It is not the jfet. The Doshi Alaap uses a jfet mc gain stage most beautifully. Like others have said, the designer's experience and ability has a lot to do with it. I believe Nick has shown that a jfet solution can work extremely well. I'm sure there are others who can make it work also.
Dear Nandric, sorry, I missed your question in late november.
Yes, if you want to avoid having to mess (if you strive for the best possibly, you've got to try (i.e.: mess around with...) with SUTs, the safe side is to go for MOMC (medium output moving coil) with 0.5 mV or more.

In general - if perfectly grounded and perfectly shielded (both is easier than widely expected) SUT can be hum free. Take care of the transformers shielding - outer and inner... - and the way it connects to the signal ground and whether the tonearm/armboard/plinth is grounded too.
I still see LOMC with low source impedance and corresponding inductance as one part of an essential team with a matching (impedance/inductance relative to step-up ratio) SUT.
Cheers,
D.
Dan I am sure that there are excellent jfet phono sections, but if you had a tube preamp and wanted tube pre/phono sound,than it might not be what some would want.A SUT allows for working with either.

cheers

e