B&K preamp design questions

I was able to pick a nice B&K Pro 10 ( there is a PRO-10mc and also a Pro-10 MC-101 ) the one I got was the 1st version

It sounds amazing, but there zero information out there

There is 2 op amps, and the owner gave me the owners manual

What do you guys make of the design ?

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Attachments

  • B&K Pro 10 preamp .pdf
    2.5 MB · Views: 81