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

If you are getting sibilance you need to look at why. I guarantee its not on the records. You could be having RF problems- that is in keeping with sibilance and hum BTW.

We always solder the DIN connections when we build a phono cable. My advice: be very careful!

The ground scenario I outlined previously will be fairly resistant to RF BTW.

Emorrisiv, It sounds like you are aware of Michael Percy Audio. If not, go to his site under that name. He does carry the Cardas DIN plug (for less than $50), but as I recall he carries other brands that cost less. Vampire and Neutrix are always cost-effective choices in the connector world. Then I would recommend you to choose some XLO copper wire, 26ga or thinner, for the wiring. It's excellent and "cheap" as audiophile wire goes. Vampire wire would be good too. (I use his 26ga silver wire with cotton insulation, if you want to spend more dough. Sounds fantastic.) He also has braided shield. I think you can get all the stuff you need to make a very high quality IC for under $75, if you choose well.

Amazing! I called Michael Percy and ordered the Cardas plug and the XLO(30guage) wire,before reading the last 2 posts! Great minds think a like! I plan on building the phono cable to be as short as possible.Maybe velcroing/screwing the SUT to the back of the TT.I was also thinking of wiring it directly to the SUT without using RCA connectors.Please tell me what you think of these ideas.They are not set in stone.

I have fixed the sibilants problem. I have a very cheap NAD PP2 phono section.The "stock" load for the MC side was 100ohms. I found the resistors and changed them out several times before arriving at 470ohms.This was BEFORE I built the SUT.I didn't think that the different load would effect the mm side of the phono section.I then tried changing it back to 100 ohm and boy does it sound much better now. No more snakes!The sound is starting to be scarey good.Too good for the money not spent.
I can only think that the additional loading either added or multiplied the mm impedance on the mm side.

I can't thank you guys enough for the lively discussion of ideas and also the suggestions.This is the kind of stuff that makes this hobby great.

e

In 2003 I started to use a Kondo KSL transformer with my LOMCs. In Germany not many people were using SUTs at that time, it wasn`t really popular. In the beginning I was not really happy with the MC output of the Lamm Lp2 DeLuxe, so I tried the MM with the KSL - and vroom, usally at 3 Ohm, only the Kondo IO-j at 1 Ohm.

Now I have 4 KSLs serving 2 Kondo M7 phonos and another SUT serving the Lamm which is rebuild now and has better and bigger Jensens. Only Boulder and Zanden phonos I use without SUTs. I will never abandon my transformers.

Oddly enough when I changed to the 100ohm resistors the hum problem when I had another cable plugged into the pre disappeared. Just dumb luck but I will take it.I still plan on building a short cable from the tonearm to the SUT.Just waiting on the stuff from Michael Percy to arrive.
these trannys rock!