I inherited the amp from my father who passed earlier this year and was excited to use it. However, I soon discovered a problem. The amp worked perfectly well until I plugged in a set of headphones. As soon as I did that, the audio in the headphones was distorted. After a couple seconds, the audio started fading. The LED on the power switch faded in sync with the audio until they were both completely off. I checked the main fuse and it was fine. I opened up the unit and found that both 4A fuses were burned. I picked up some replacements and installed them thinking the amp had a deeper issue. I powered it up and the amp worked perfectly. I proceded to plug the headphones back in and the fuses burned again. I replaced them again and tested the amp without headphones. It worked perfectly. I do live in a condo so having the ability to use headphones is key.

Is this something that anyone has encountered before?

Thanks!