Hello!! First day with my new H9 (standard version).
Put the pedal on the effects loop of my Marshall JVM combo. I adjust de loop level to -10dBv and some presets work fine but other ones sound a little "hissss" when start to play.
I don´t change Inputs and outputs leves on H9 at the moment. Some expecific settings for in/out levels on H9 to solve this problem. The loop start on H9 to a Deigitech Supernatural reverb to amp return. Im from Spain, my english is poor, excuse me!! 😉