Another way around AC noise is to run a laptop from batteries only. You need backups that are charged and ready to rock. That got old, and I got a Radial I/O box that accepts multiple L/R lead lines and outputs L/R balanced signals with pad boost options and ground lift button. It's the PRO AV2 box, but it sounds like there are cheaper options. This costs around a $100 as I recall, and has the options of flexible source input connectors inluding 1/8th" 1/4" mono and stereo. It's simple and is very quiet.


DrDuBose
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