testrat

Hissing all the time. It's sounds like the hiss you get from a high gain fuzz/OD pedal but at a much lower volume

I'm running as SD 800 into a 106 HR. EQ flat, both filters off. Great punch and i can hear myself again. The Ashdown ABM 500 evo 2 was too warm. One quick question, anybody notice a hiss within their gear or have i got a problem?

The pedal is one of the original batch with silver knobs and was modified by Ashdown from passive only to full spec just after i bought it so it's at least 2 years old. Returned from 3 month break and it was ok. Next rehersal it started to hiss. Pedal has been on a board since i bought it and is switched on all the time. Hiss is only heard when pedal is on. Help as the hiss is driving me mad.