I've noticed a few posts regarding recording very quiet, even inaudible sounds.
My company is a Sanken dealer, and we sold several of their "Insect" mics, the MO-64 & MO-64B. These are the most sensitive contact mics ever made, but they were discontinued last year. I believe we sold the last three on the planet.
Since then, we have had a number of inquiries from folks still interested in buying one. as a result, we are seriously considering having Sanken make a limited custom run for us and are keeping a list of people who are seriously interested.
Product information can be seen on our web site.
Note that this is an expensive mic. The last units sold for $3,500.00. Those who are seriously interested (no commitment is required at this time), please email me directly.
Marty Atias ATS Communications Marty@ATSComms.com