Just that many bench meters can measure 10mV AC in the audio range with good precision.
I posted this due to your comment: “but few have the accuracy at low-levels AND at audio bandwidths”
I believe many people around here know that I have used some money on test equipment (Not only multimeters). This pile of equipment is very useful for my reviews.
I did not buy it to do a review, but because one of my other meters has a intermittent fault. I hope to fix it, but need a new meter for now.
But I will probably do a review of it, before I swap the meters.