Last week my Dirty Little Secret developed a nasty hum and interference problem. Don't know what happened. Contacted Catalinbread and they had me return it to them. They notified me that it had a grounding problem and replaced the foot switch etc and are returning it express, should receive it back today. No hassles and prompt response. I love the DLS. It's simple and straightforward and definitely gives that Marshall vibe. It's a great foundation pedal.