Seems that without Hi-Cap is better sound in my System

Yes - you can’t use the housing of the PSC plug as a reference, it is isolated.
Just measure between the two pins - should be 16VDC for the original version.

Regards
Neil.

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Hi Neils

Great, Thank you for letting me know this.
My napsc shows the 16.5 v
1: postivie 2: negative is this correct ?

Thanks.

As you look at the back of the 82 - the lower pin is positive.

Regards
Neil.

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