I got an Aguilar AG 500 back in May. It broke a few months later, I was having distortion at low volumes. I got a new amp while the Aguilar was in the shop. I now like my new amp more then the Aguilar.
The repairs: Resoldered main circuit and power supply connections.
Cleaned and reset connectors/headers.
This was all done at Audio Repair Specialists in Canoga Park.
I used them because Aguilar told me they contract them for repairs in Los Angeles.
I also have the pedal for the amp.