<https://line6.com/support/topic/16128-alesis-alpha-112-fizz/#comment-119738>
<http://schema.org/text>
"What are the 1/4 inch outputs set to? I believe they can still be set to line or mic. I take it you are going direct to a mixer? You could try setting the output to line and use an insert which bypasses the preamp on the channel. It is very possible you are not playing well with the preamp on the channel. I have not tried the insert yet (didn't think of it until after the fact) but what we did to get rid of the hiss today was set the Helix out to mic level then dropped the channel gain to about 11 o'clock (analog mixer). That seemed to take care of the hiss and we still head enough headroom on the channel for more than enough sound. In fact we only ran the slider about half up. We cup,d have backed the channel gain down more but then in our setup you need to get a screw driver out to boost the Aviom monitors so we avoid it when possible. \n"
<https://line6.com/support/topic/16128-alesis-alpha-112-fizz/>