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RE: I forgot to mention

I probably mis-spoke. What you recommended is in fact all I've been doing, ie swapping out the interface cable that solders to the little circuit board inside the TT. I had previously had some shielded twisted pair installed for the experiment then put some coax on there.

Just a little whining. No show stoppers.

I swap between twisted pair and coax depending which preamp I'm playing with at the moment. I didn't mention earlier I also have a full balanced preamp I'm playing with. The problem with this particular balanced phono stage is the noise. It's self noise, at equivalent gain, is around 5-10dB higher than where the hum of the 651p's are sitting which is also 5-10dB above their self noise. In other words the balanced performance of the balanced preamp is offset by it's crummy electronics design. Though it has no apparent hum visible in the FFT scans I've captured from it, it's wideband noise is pretty massive.

Edits: 05/31/17

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