Ischell J-BOX3c

This unique contact mic is a dream come true! It allows you to play at high volumes while retaining the natural sound of a microphone. It's the best of both worlds, the natural sound of a microphone with the feedback resistance of a piezo pickup.

Just place the mic under the strings with the putty and place the jack on the tailpiece with double-sided adhesive.
No impact on the natural sound of the instrument.
No drilling or modifications, the system is removable.
This mic kit comes with a preamp with a bass roll of switch: Flat/180Hz/360Hz.
Uses one 9V battery..

This unit is very popular with artists in France, including Daniel Givone and Romane (who used it for recording the rhythm guitars in his latest album "Roots & groove live au sunset.")