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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.
noibs

Showing 1 response by tvad

tvad
9,467 posts
 
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.
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