Up for sale is this nice Dean Markley active "La Jolla" acoustic guitar pick up.  5 are available.

I'm not any expert on these being a horn player, and welcome any expert knowledge via messenger,etc.   This is from a music store I teach at which was sold to a large chain.  These are items the new store didn't want, so selling on behalf of the old store owner. 

I found some specs on this here:

• The La Jolla Active stereo system allows you to enjoy the wonderful tone benefits of each style of pickup
• In this stereo system, each pickup may be EQâd separately for a fat, rich tone with clean, defined mids, and crystal-clear highs
• The Tahoe sound-hole magnetic pickup produces excellent bass, mid-range, and high-end response, while the Barstow⢠transducer provides you with a more âtransparentâ mid-range and glassy highs