SUT - electrical theory and practical experience

Thanks for the link and the commentary. I guess the first step is to borrow one that is ballpark the “right” one (I think windings ratio is the spec) and see if it wows me. I did try the Allnic SUT into an EAR 868pl MM input but was underwhelmed. But that was one cartridge ago. Maybe that would just replicate the sound of the H-3000 anyway.

My experience is that I can use a LOMC direct into the MM Stage, the Volume needs to be maximum, but the presentation to my description is very Rich and not as I like it.

I can also use a In-Built MC Stage and have lots of adjustment from the controls offered on a much liked MM/MC Phon'.

I can also use a SUT or Head Amp' on either of the Phon's in use.

I have found a SQ that really appeals, and can play around with it a little, the flexibility is also part of the attraction.

A SUT or Head Amp' is also a option on a SS Phon' with both MM/MC Inputs.

I have heard the MC Stage bettered or able to produce a SQ more to my liking on a SS Phon' with a SUT and Head Amp' used on the MM Input.  

Thanks o_holter. I believe your right I never got the settings right on the ASR. Didnt quite understand the loading/gain thing back then to be honest (still dont).
Finally got a new phono preamp though (schiit mani 2) and it was a great improvement using the AU340 SUT into the mani MM stage with 42 db gain. Everything kinda opened up and better punchy sound, better dynamics with zero noise/hum/buzz added. No coloration and that I also like a lot. 
I did try the Manis MC stage with 60db gain and 200ohm loading. Sounded nice but I no longer quite recognized the DL-103. The clean, dead silent, natural and organic sound Ive become used to with the SUT was gone. The Mani MC also picked up more vinyl noise (crackling etc etc) when compared to the AU-340 that seems to mask record imperfections really well. Maybe more engaging sound with the Mani, I think thats a matter of personal preference and the rest of the setup. This is really not a fair comparison at all (mani being very low budget) but it at least confirms my believe that you need to spend much more than 150 usd to beat a SUT.

Anyways, I asked myself before how much my ”new” receivers built in MM phono was holding the sound back? And how important is the MM stage when using a SUT? In my case it made huge difference even with a low budget preamp like the Mani. Know theres always room for improvement but this I can stick with for some time. 

Am soooo curious trying the Kenwood SH-305MC, anyone with experience?