Mismatched Preamp/Amp Impedance--What Will I Hear?

I've got a Ming Da (Meixing) MC-7R tube preamp sitting in a closet. I got a good deal a few years ago and it uses common tubes that I have a lot of, so I bought it. However, I never used it much because it didn't sound as good as my main tube preamp.

Anyway, I'm thinking of taking it out of storage and at least playing with it. Its output impedance is 100K ohms! All of my solid state power amps have input impedance between 25K and 50K ohms. Cable length between the two will be one meter.

What will I hear (or not hear) as a result of the super high output impedance of this preamp. My main preamp easily satisfies the 1 to 10 rule, but the MC-7R doesn't come even close.

Thanks for any insights.
I feel pretty certain that the specs you are looking at are wrong. 100K output impedance is a ridiculous number that makes no sense.

That said, if you connect a 100K output impedance into a 25K input impedance you would get approximately a 14db reduction in volume relative to the volume you would have if the 1 to 10 rule were satisfied. You would also get various frequency response irregularities corresponding to differences in the variations of the two impedances with frequency. That is likely to be most pronounced in the deep bass, where tube preamp output impedances tend to rise, causing the deep bass to be attenuated relative to higher frequencies.

You would also get some rolloff of the upper treble due to interaction of the output impedance with cable capacitance, even at the short one meter length, unless your cable has particularly low capacitance (e.g. 12pf/ft, such as some of the Blue Jeans cables).

-- Al
I agree with Almarg. I'd wager a large sum that the output impedance is not 100k Ohms.

Looking at the specs on the web, it seems pretty clear there was a Chinese-English translation error regarding the output impedance spec.

So, the question remains. What is the correct specification: 10k Ohms, 100 ohms, 10 ohms?

Dunno. Good luck.
Thanks for the responses. Hope you're right about a translation error. I found the 100K output impedance in different places on the Web, but perhaps they all result from the same translation error.

I just try it out and see what it sounds like. My other tube preamp has 400 ohms output impedance so it should serve as a good comparison.
There is no way it is anywhere near 100K as stated. If the preamp is tranny-coupled it could be as low as <100R. If not and has a cathode follower then ~1000R. If neither could be as high as 2-3K ohms - that is about the upper-limit.