2. analog
  3. 180879-41852

SUT - electrical theory and practical experience

Some vinyl users use a SUT to enhance the signal of the MC cartridge so that it can be used in the MM input of a phono stage.  Although I don't understand the theory behind it, I realize that a SUT should be matched individually to a particular cartridge, depending on the internal impedance of the MC, among other things.  

Assuming an appropriately / ideally matched SUT and MC, What are the inherent advantages or disadvantages of inserting a SUT after the MC in the audio chain?  Does the SUT theoretically enhance or degrade the sound quality?  What does the SUT actually do to the sound quality? 

Thanks. 

drbond

Showing 1 response by ticat

ticat's avatar
ticat
325 posts
 

To answer the OP's question re: what does the SUT do to the sound quality...

For what it's worth,I have several phono stages and several active step up devices/ SUTs and generally, the SUTs are quieter and more open (when properly matched etc...)

I currently run a Sunvalley Audio SV-EQ1616D phono stage and ZYX cartridge. The Sunvalley has a built in " FET head amplifier that adds another 25–32dB gain with fixed 50 ohm loading for use with low-output moving-coil cartridges". The MM stage is good, the FET is NO Match for a good SUT. (n.b. the proper load for the cart is +100 ohm). I am using a copper wound SUT in custom housing and sheilding. Best combo I've had since the 70's.

More to discover