2. analog
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How to choose step up transformers?

I just get into vinyl.  I bought a Sony PS2250 turntable and I have a Luxkit a3300 preamp.  The preamp has a MM phono stage but not MC.  I would like to get a MC cartridge so I am looking to buy a Step up transformer.  I don’t know what MC cartridge I am going to get yet.  Do I need to match up the cartridge and the SUT?  If yes, what do I need to match?  Likely I will buy something not too expensive such as the Denon DL301.  
gte357s

Showing 2 responses by gte357s

gte357s OP
281 posts
 
Thanks for the reply.  It seems I need to first pick the cartridge then buy the SUT.  But if I change the cartridge, I may need to buy another SUT?


gte357s OP
281 posts
 
Hi,

I read the links mentioned above and honestly, I can’t figure it out.  I decided to buy a Denon DL-H5LC cart.  
It has a low output of 0.3mV, so, I need a high gain SUT, like 1:20+ ratio.  What I don’t understand is the impedance part.  It has load impedance of 100 ohm.  Unload impedance of 18 ohm.  What is the significance of these two numbers?  It seems the impedance is related to the gain.  Many SUT I checked has just a hi/Lo gain setting.  Some have a ohm setting such as 10 ohm:31dB (1:36) and 30 ohm:26dB (1:21).
 What about that secondary resistance?

So, besides choosing one with a higher gain, what else I should consider?

thanks.
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