So I have w purchased my second X-Vive unit and neither unit that I have will pickup audio from my guitar. I play a Kiesel Vader bass. The pickups are active. At rehearsal I had a guitar player with am ES335 try it to see if it was my guitar but his didn't work either. I know are cheap but I only need for one gig. I am going back to GC in Portsmouth NH to try to sort this out. Thoughts