SUT vs. Phono preamp

Btw, other that what I posted about main " trouble " with SUT belongs to the low bass range where an active well designed phonolinepreamp has not only  more tigth or deep but with out any kind of noise or bluring you can detect but my Denon AU-1000 performs truly good even better than the silver versions of Audio Note ones.

From vintage SUT's not only Dernon are really good but you can look for Entré that are excellent too but any vintage SUT ask for modifications but its transformers that are second to none.

If some one is looking for head-amps the one from Classé Audio NIL-3 is something to listen and own it and second to none too: true Canadian engineering with an excellent excecution design reflected in its extreme high quality performance levels.

. A extremly heavy units, the power supply is a behemont size and in reality can function like a stand alone amp due to the caps reserve on it. In the picture you can see it and I can tell you that it measure ( deep. ) like 50cms. I owned it:

file:///C:/Users/LENOVO/Downloads/NIL-2%20Brochure%20(2).pdf

http://www.topclassaudio.com/web/eng/used_product_details.jsp?gid=8621#    

https://www.usaudiomart.com/details/649035718-classe_audio_nil_mc_stepup_amplifier_prepre/images/520682/    


R.

I have been using the Audio Interface (40 ohm) SUT for 35 years.  It has excellent Jensen transformers made in my hometown-Chatsworth, CA.  I use a resistor to achieve 220 ohm impedance match to my Benz Ruby 3.  The exact replacement for it is the ISO-MAX built by Jensen at $550 https://www.ebay.com/itm/Moving-Coil-Phono-Step-Up-Transformer-SUT-Jensen-Transformers-ISO-MAX-MC-2RR-L/401334303038?hash=item5d7163793e:g:eFQAAOSwLJ9Z-imM
If one can afford or has multiple MC cartridges, the Zesto Andros Allaso is also an excellent choice using Jensen transformers at $3000.   It has 10 impedance settings and 4 gain settings equivalent to 40 total settings.   https://www.zestoaudio.com/andros-allasso-step-up-transformer-mc-to-mm-extremely-versatile/

@fleschler 

+1 on the Zesto SUT.  I use one in combo with a Herron VTPH2A and love the flexibility and ability to dial in nearly any cart.

Dear @fleschler  : Zesto is a good SUT but I think has a little " problem :
" extremely-versatile "

To achieve all those settings the unit needs some switches, I can say a lot of them, and the best switch is no switch because degrades the cartridge precious signal information.
All the losted cartridge signal information through those switches never came back ! ! 

No single switch is the best way to go with SUT's. Signal have to pass as directly as it can, with no " obstacles inside the SUT.

That's why the Denon AU-1000 is so great SUT and of course with excellent transformers.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

@rauliruegass I spoke to Upscale Audio who sells the Zesto and he assured me that there are no switches in the impedance changes, they are all done using different taps on the transformers.

Yes, my next cartridge (which maybe the top of the line Benz) will probably have a Zesto SUT to accompany it.