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PostPosted: 19 Jul 2016, 17:59 
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Hi Folks, I just got a pair of STUs from

http://www.sacthailand.com/transformer_mc.html

For you lovers of low output moving coil phono cartridges you understand that much of the time using a SUT is the best way to connect a LOMC to the phono preamp. You also probably figure that they are really costly (many are). So when I find something that is a good value I like to pass it along. I have been using Lundahl SUTs for a number of years and they do a really nice job of matching LOMC to preamps. They are not cheap, but then at about $80US each not too bad when you figure that the cartridge being used is likely to be be in the $500 and up range. So on a tip from another audiophile I ordered a pair of the Silk (that BTW is the company name and not what they are made out of) SUTs. At about double the cost of the Lundahls I expected some improvement and got it. They are quite excellent. They seem to have a cleaner bottom end and give a more three dimensional stage presentation. I have not tried them with all the cartridges I have, but they really make the Dynavector Karat 23RS-MC sing. I fully expect great performance out of my other cartridges as well. The biggest problem with the SUTs is that they are big. About 4cm in diameter and about 6cm tall. Heavy as well at about 500gms each. They do come with mounting brackets though. I was impressed with the shipping on mine...costly a bit at $33US, but they came via FEDEX in 4 days from Asia. So if you are out there looking for an upgrade in your system and don't mind soldering a few wires...these could be what you are looking for.

Good listening
Bruce

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PostPosted: 19 Jul 2016, 18:11 
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Here is a link to the sales of the SUTs

http://www.store.diyhifisupply.com/Cata ... ormer-pair

Good listening
Bruce

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PostPosted: 19 Jul 2016, 22:58 
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gofar99 wrote:
They are not cheap, but then at about $80US each....


Ummm, they're $150/ea. by my math :eek:

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PostPosted: 20 Jul 2016, 14:51 
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Sorry for the confusion...the Lundahls are in the $80 each range.

Good listening
Bruce

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PostPosted: 27 Aug 2016, 12:50 
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gofar99 wrote:
At about double the cost of the Lundahls I expected some improvement and got it.



But was it double the improvement? ;)


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PostPosted: 27 Aug 2016, 16:59 
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Hi, I am afraid that the law of diminishing returns applies to high quality audio. Twice the price for nearly anything audio will get you at best 25%. As you get further up the scale the returns are even less. I figure I got about 15-20% on this one as the Lundahl 9226 SUTs I was using are quite good. Better IMO yes, worth it IMO yes...but then there are lots of folks happy with Crosleys ( :eek: ).

Good listening
Bruce

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PostPosted: 27 Aug 2016, 19:50 
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gofar99 wrote:
...but then there are lots of folks happy with Crosleys ( :eek: ).


I found of about 50 of those we sell around Christmas, half are by March coming back for a REAL turntable.... then amp... then speakers... :smoking:

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PostPosted: 10 Oct 2016, 15:49 
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Hi Everyone, After much tinkering :blush: (that is a polite term for messing around with stuff) I have determined that if you use SUTs then they should be completely enclosed in steel cases. The best way is to mount them on a non-conductive board and attach all their internal shields, cores and cases to the signal ground. I connect the input and output grounds together as well, but not the left and right channels together. Then the steel case goes to the chassis ground that is from the turntable and the chassis ground on the preamp or amp. Very quiet, not sensitive to being near things that do hum like trannies and such. As always there are other ways to do things....this works for me better than anything else I have tried. Now the only noise (or hum) I get from the phono is a slight tube hiss at a level roughly 40 db over normal listening level. If you do the math.....there are few amps and fewer speakers than can handle that setting. But then what is a kilowatt or two among friends.

Good listening
Bruce

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PostPosted: 11 Oct 2016, 00:14 
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We discovered that when we use our aluminum enclosures, wrapping the SUT's in this works wonders:
http://www.ebay.com/itm/Ultraperm-80-Me ... 0596036375
(not affiliated with the seller, just a satisfied customer)

Cheers!

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PostPosted: 11 Oct 2016, 10:42 
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Hi, yes I use it all the time. In this case steel worked better. Go figure. I suspect it depends on what the actual frequencies and intensities are involved. It works great under the platter on turntables that have unshielded AC motors and an acrylic platter. My only real issues with the stuff are that it tends to be a bit costly and is razor sharp :bawling: .

Good listening
Bruce

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