Can someone give me some insight.

Blindjim,
Thanks for the information.I do have a few questions as I see you did or may still use the MIT cables.
When I called MIT and asked about the impedance switch setting they told me that my amp input sensitivity was 33k ohm.He said to set the impudence switch to medium.I had it set at high.But the manual says for 33k ohm should be set at low.So I decided to try low.With the low setting things are a little more detailed and a lot more brighter.With the medium setting it is just smooth as butter and if there is a loss of detail it is very negligible.Also the bass is extended compared to the low setting.You said that the switch limits or decreases the mid range.I take it that the lower the setting the more mid range or do I have this wrong.Not sure why the tech at MIT told me to use the medium setting but will call them back on Monday.I know you said the setting was not set in stone and can be played with.With your MIT cables did you keep the recommended setting.Thanks.

Shaunp

I think what I said was the mids could be recessed or made more prominate (marginally so, yet noticeable) by playing with the imp sw. Not louder or softer, although it might appear that way to some.

... and yes, other aspects of the sound do change too by moving that sw about. it was an eye opener playing with that sw. Teaching me the importance of properly matched and improprerly matched cabling, and what it can do to the sound, if the imp is not right or even close.

AS the Tech alluded too, those numbers aren't 'live or die' figures... given he pointed you to another settings. Their Spectral gear likley does very well on the lower pos.

I did post a review of some ICs, look there for more info as I simply can't recall exactly.

I've had mine set to where I like it so long now I don't recall exactly what all is affected and how, but those results are at your fingertips now, so do investigate.

it'll get more complicated when or if you go to XLR. They have two switches.

I sold my Magnums and now have Shotgun S2s. I use them off my rec into my tube pre for the rec's tuner and cable box radio stations, till I can find another pr. that suits me better. I would like to have again a magnum 1 or maybe a 2, albeit, not to supplant the S2, but to use elsewhere.

More playing time will show you still more resolution, and that buttery smoothness might fade some and morph into a bit more dazzle. it's probably due to the connections within the MIT cabling, as there are more in them than in most other cables.... and there's those components too. that all adds up to lengthier run in or re-run in times. or such is my exp.

Some say around here, simply leaving the upstream item on and the downstream item off, can aid the run in some. Not sure if that is applicable to MIT though... and my exp doing just that shows the effect as quite marginal at best There's no replacement for conducting a signal. IMO

In the end, that switch needs be where YOU need it to be in your system for your preffs. it's your dime, so you make that call. period.

Lastly, as imp varies, maybe this will show you more on that mechanism's worth. Say you add or mix a SE preamp, with a Balanced amp. Now what? The amps input imp is shown to be 50K. usually that means 50K total using XLR cables or both legs of the XLR interface. Or 25K per leg as RCA.

My exp says, it's either one of the two closest to the rated downstream input imp. the mid point usually is the one size fits all, selection... with some exceptions, and why the tech said use it.

Thanks again for your help.Part of my problem is probably the 9 dollar ic from monoprice that I have from cdp to pre so looking to get another S3 for that and or a S2.Not sure which would be better.I read your review with interect and maybe missed something so will re-read again.Also is it safe to use the switches without turning the system off?
I do like the medium setting as it does give a more fuller soundstage and without the edge that the low setting gives.I am running in the low setting now as you said once you change the setting ,that setting has to be run in.Although the low setting is nice it reminds me of the Nordost Red Dawns but with more edge and could be due to not being burned in.If I put one of my warm Monster ic,s from cdp to pre it takes the edge off but also removes some of the clarity.Thanks again.

Also you say..."My exp says, it's either one of the two closest to the rated downstream input imp. the mid point usually is the one size fits all, selection... with some exceptions, and why the tech said use it".Should it not be set to the UPSTREAM components input sensitivity or the end point.I have the cable from pre to amp so would it not be the amps Sensitivity?Thanks.