@lowrider57 They had two versions of M3: pre i post October 2013. Both have gain of 18dB
Here is user manual that reflects it:
https://d1b89e86-9572-4311-9f80-60009b280608.filesusr.com/ugd/3e7c3b_cb9f60cb6a26418992b53df75192a77...
Here is user manual that reflects it:
https://d1b89e86-9572-4311-9f80-60009b280608.filesusr.com/ugd/3e7c3b_cb9f60cb6a26418992b53df75192a77...