Apparently, Marshall MG-15GR Gold Series amp has an issue with quality control. The piece i received too had a lot of whitenoise/hissing like many other customers worldwide. I would not recommend buying this Marshall amp model. I returned the product back to Bajaao for a full refund. I request Bajaao to expedite the refund process for its customers as it took several phone calls and reminders to the after-sales agent to get my money back.