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.
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- 298 posts total
@drbond : What happens with an external SUT about all those additional " steps " where the cartridge signal must pass through is almost the same when the cartridge signal from your CH must goes to an external line preamp and that additional step makes nothing but signal degradation but exist something additional in your electronics and is that the cartridge signal suddenly must pass through a way different line preamp design not a CH unit to preserve at least same " signature ".
That's why normally is better to own a Phonolinepreamp where we have to add nothing to the cartridge signal. R. |
@alexberger I have no criticism of the 834P (Original) and in (Clone Build Versions) I would say a few Clone Versions were built to a high spec' as I know one of the builders and who they take their influences from on DIY Projects. As said the ECC83 is a hard Tube to tame and can be overbearingly rich and bloat the lowest frequencies. I learnt this more than 25 Years ago with a Valve Pre-Amp'. I also learnt I am repellent to discernible Rich Tones and Loose Bass. There are humungous music enthusiasts who are very satisfied with this type of presentation, and I am genuinely very pleased they have discovered the Sound Quality that offers satisfaction. The SUT as already referred to within this thread is capable of adding richness and in some cases with a quite discernible and notable impact on the SQ. As said, it is difficult to imagine a SUT in use with an EAR 834P that would be capable of reducing the perception of richness, the pairing would seemingly create a richness, but to what degree of being noticeable, and perceived as an attraction or repellent is with an unknown outcome. |
Thanks for the detailed response. So, just to clarify, you are most concerned about the bandwidth limitations in a SUT. I could agree with that; however, I'm not certain that actual signal degradation is any better or worse in a transistor, just different. I think this video from Veritasium does a rather informative job of explaining how current actually travels: no it doesn't travel in the wires but in the surrounding electromagnetic fields, and electrons don't "flow" in the wires, either in AC or DC, and in a wire with no resistance, the current flow is instantaneous, whether 0.001 m long or 100,000 m long. I suppose the magnetic properties of the silver and copper account for the difference in sound, and while I really don't know all the details, I don't know that the method by which a signal is transmitted in a transistor is any better than a transformer.
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- 298 posts total