The 100 vs. 50 ohm is not an issue. They are both much lower than the 9K input of the placette. One has more "punch" because it is just designed to have a higher output. As long as you have it loud enough even if wide open with the ECD and it sounds good you are golden.
I'm a little out of the loop on phono stages so I'll defer to somebody else.
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I'm a little out of the loop on phono stages so I'll defer to somebody else.
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