SUT - electrical theory and practical experience

The H 3000 already uses built in step up transformers for moving coil cartridge levels of gain. If you want to use an external step up transformer, you would need to use moving magnet cartridge inputs on the H 3000. I don’t know whether the H 3000 even has MM inputs. If it does, that’s where you could go. You cannot hook up an external step up transformer to an internal step up transformer. Personally, I think you may be chasing your tail if you are even able to try this experiment with your H 3000, because the internal step up transformers on the H 3000 are already excellent.

Thanks Lew. Yes, there is a MM input. I wasn’t sure if the transformers in the Allnic were being used in the same role as a SUT plays. And yes, it is my understanding that Allnic hand builds the transformers and uses permalloy cores, which seem preferable to those with SUT experience/expertise.

I guess there is no harm in borrowing one to try but given that good SUTs are quite pricey (for a passive device), there would need to be a decent audible improvement for me to keep one in my system.

Adding the SUT that is most attractive to one's unique preference is more the discovery to be made than the adding the right SUT.

Matching the SUT to the Cart' is only one sector to be a consideration.

SUT's add a Coloration to a presentation, it is a case of how 'Rich in Tone' is ones threshold able to entertain before it becomes a repellant and how much of a compromise to the overall performance is the presence of Richness to have.

Lovely Deep Rich Tones are easily able to suppress Upper Mid' and High Frequencies and completely paste over the details in a recording. 

My preferred SUT's only add a hint of a Rich Tone and are not too far from the effects a Head Amp can have.

The Link has a Thread which is produced by an individual I trust, and have direct dialogue with via email on the subject of SUT's quite a few years past.

Not too long ago, I learnt that this individual favours the Ikeda Ist-201 as their 'go to' SUT, (this may have changed in recent times).

The Ikeda is able to be acquired for a similar price as the Luna, the Ikeda is also seen as a used item occasionally, so a few ££££'s can be saved. 

SUT's are a voyage of discovery, I wish you a safe journey.

Thanks for the link and the commentary. I guess the first step is to borrow one that is ballpark the “right” one (I think windings ratio is the spec) and see if it wows me. I did try the Allnic SUT into an EAR 868pl MM input but was underwhelmed. But that was one cartridge ago. Maybe that would just replicate the sound of the H-3000 anyway.

My experience is that I can use a LOMC direct into the MM Stage, the Volume needs to be maximum, but the presentation to my description is very Rich and not as I like it.

I can also use a In-Built MC Stage and have lots of adjustment from the controls offered on a much liked MM/MC Phon'.

I can also use a SUT or Head Amp' on either of the Phon's in use.

I have found a SQ that really appeals, and can play around with it a little, the flexibility is also part of the attraction.

A SUT or Head Amp' is also a option on a SS Phon' with both MM/MC Inputs.

I have heard the MC Stage bettered or able to produce a SQ more to my liking on a SS Phon' with a SUT and Head Amp' used on the MM Input.