Hi,

When I turn off my guitar volume I can hear the normal hiss of the Ultra Gain channel but there is another sound which is like an helicopter sound on my DSL20HR. I owned a DSL1HR and it's perfect. The hiss on the Ultra Gain channel is normal without this helicopter sound.

Any issues like this anyone ? Any suggestions to get rid of this issue ? 

Thank you so much !

André

I wish I could upload an audio clip but seems like the options are not available here...