Does anyone have experience matching an Icon PS1 MKII with a Soundsmith Zephyr MIMC Star?

Icon has yet to respond to my question as to how they calculate a 100Ω load. I ask them if they were using a RC across one or both ends. It seems as if they are ignoring the question.

After sending Soundsmith the specs of the PS1 MKII. And describing what my concerns were. Explaining to them, that I felt that I was out of my depth concerning SUTs and asking for any advice that they could give me concerning the issues. After waiting two days for a response. The response that I received was, "Peter says that the Zephyr needs a ≥ 470Ω load." WELL, NO S###!!! I may be unfamiliar with SUTs. But I can read basic specs. Thank you.

Quite frankly, I am disgusted with both companies at this point. I spent $2,000 on a  SS cartridge and that is the best advice that SS can offer?

And as far as Icon is concerned. Give me a break!. You haven't discovered cold fusion, or room temperature super conductors. It is a SUT for god's sake! Why all of the covert BS?

I have another question for this forum that is related to this thread. Can anyone recommend  a company that makes a SUT with a reflected load of 470 ohms or greater, at a reasonable price? I can't seem to find one. I would welcome any suggestions that might steer me in the right direction. I have, once again, ask Soundsmith for suggestions. I will wait to see if Peter has the time to give me a useable response this time. Until then, I must rely on this forum for information.

BTW, I have yet to purchase the Icon PS1 MKII. And I seriously doubt, at this point, that I will. And, as much as I like the Zephyr MIMC. I don't like to be boxed in with no options. I am rethinking my entire approach at this point.

Thanks again for your advice. It is highly appreciated.

Any unadulterated SUT with a turns ratio of 1:10 (i.e., a voltage gain of 10X) will show the cartridge a 470 ohm load if connected to a standard MM phono stage with an input resistance of 47K ohms, which is the industry standard and has been for probably 80 years.  These are laws of physics. So price is not an issue; a cheap SUT will yield the desired impedance. To achieve a higher impedance, you must use a SUT with a turns ratio of less than 1:10.  Then do the math as described in my post above.  But 1:10 seems perfect for your needs.

It actually would be a simple matter to open up the chassis of the Icon and find out what is really going on, then fix it so you end up with the cartridge seeing 470 ohms, but that is assuming that their other information stating the turns ratio is 1:10 is correct.  We don't even know that for sure.  So yes, buy something else.

By the way, I don't understand why you would indict Soundsmith.  They can only reiterate what is in their package insert, that their cartridge wants to see at least 470 ohms.  There is no reason to expect PL to be an expert on the Icon.

If all you are looking for a SUT, then suggest MovingCoil (erhard-audio.com).  He took over for K&K when Kevin got out of the business.  Erhard builds with Lundahl SUTs and there are a number of different versions (kits can be fully built for a nominal charge) at various price points with most having 2 different ratios such as 5 & 10:1 and 8 & 16:1.  Lundahl does not offer a 10 & 20:1.  The 8:1 should yield about 735-ohms which would be good for the Soundsmith, while 16:1 would offer about 184-ohms which would offer you the opportunity to use a moving coil cartridge.  You can contact Erkhart and see what they recommend for you price point.  Then you just need to mate the SUT with a MM phono-preamp noting that you want to keep the cable between the SUT and the phono-amp short.  Also, the MM phono preamp would need enough gain.  I have no specific recommendation for a MM phono preamp but depending on whether you want SS or tubes, there will many recommendations.  But understand that using an external SUT is just one way of doing this.  

@flash56 

You have 2 easy options - 

If you purchase the Icon PS1 you would need to buy a SUT wth 1/10 step up ratio and plug it into the MM input. There are plenty of vintage units such as Denon AU320 or Denon AU340 that will do the job. Alternately bobs Devices are a company that build SUTs, get good reviews,  and they can advise you on the appropriate SUT to buy.

Second option is to buy the Soundsmith MCP2 phono. This has fantastic loading options and will match your cartridge. I have compared this phono, using a Soundsmith Paua, to some much more expensive phono stages, eg Lamm, Linn Uphorik and others and it is a very good phono.

Personally in your instance I would recommend you buy the Soundsmith MCP2, it's very good and will save you a lot of headaches. They also come up second hand  from time to time if you want to save some money.

It is unfair to blame Soundsmith for not knowing what is inside the Icon. It is clear from the comments by the Icon designer that they have chosen a fixed 100 ohm ;had for MC cartridges based on recommendations from Ortofon.

Dover, Apparently the Icon PS1 has a bulit in SUT about which there is much confusion, as you know. We don’t know how they achieve a 100 ohm input R with the built-in SUT, which is said by them to be 1:10. One way to achieve a 100R input impedance with a 1:10 SUT would be to use a 10K resistance on the phono input side instead of the standard 47K. If that is the case, then it would be futile to use an outboard 1:10 SUT (bypassing the internal SUT) in hopes of achieving a 470 ohm net impedance for the Soundsmith MI cartridge. You'd still end up with the cartridge trying to drive 100R. This is assuming that both the MM and the MC inputs feed the same phono circuit. Easiest thing to do is not to buy the Icon.