Ugly distortion on my class 5

[Tubbethedog]

A few days ago i noticed the distortion on my C5-01 was getting fuzzy, muddy and unpleasant on the low wattage setting. I switched to normal mode and used my tubescreamer for distortion and it didnt sound good like it used to. Even with headphones the distorted sounds is ugly so it is not the speaker. Still quite ok sound at low clean volume. Before i noticed this i played it on low wattage setting cranked with a clean boost. I have changed all tubes without results. Can it be some electrical non tube related problem? Anybody had this problem?

[ClassicRock88]

How old is the amp? Mine did that when the speaker was breaking in. Try through an external cab.

[Tubbethedog]

About 2 years old , the speaker should be braked in and it sounds bad thru headphones also.

[ClassicRock88]

Wow. Yeah it should be broken in by now. I would PM SteveD or Surf. They are wealths of information. I would also try replacing all tubes AGAIN one by one since bad tubes can be bought new.

[DirtySteve]

Are you sure it's the amp and not a bad cable or something? I had the same problem one time and it ended up being a bad patch cord between 2 pedals. I did the same thing you did, started swapping tubes and it did nothing. It finally dawned on me to plug straight in and bypass my pedals and yep...problem solved.