Got set up yesterday with me new sonnreiser clip on mic and lugged my old amp along with a boss recorder for phantom power. Got a signal from the mic but am pretty sure nothing was coming from the amp. It was hard to tell with all the other amped instruments and I didnt want to be fussing with the set up because being new I was nervous enough. I put the clip on into a Boss 900 and put phantom power on and saw the recording level fluctuate. I came out of the boss via the headphone port and into the amp in the mic/line port. Volumes up but nothing I could hear above the usual noise of the tenor. What is the mic/line port? Should I put it in the normal channel that I would use for guitar? I know it seems I should just wire it up and find out but I have so little space now I store most of this gear elsewhere. Anyone tell me?