A noise gate pedal may help the Aunt Peg amp's noise. A noise gate pedal can reduce background noise when you're not playing, especially in high gain circumstances. Set the threshold of the noise gate pedal in your effects loop or in front of the amp to eliminate noise below a specific level, giving you a cleaner signal when playing.

You can also check cable and connection quality. Bad cables or poor connections can create noisy transmissions. Check that all wires are working and plugged in.

As every amp is different, some Aunt Peg owners may have had similar noise concerns. If you haven't already, you may ask the Amp Garage community or other Aunt Peg owners how they addressed a similar problem.

It's great that you like the Aunt Peg amp's sounds and quality, and Nik's customer service is great. Always solve issues and find methods to improve your playing experience.