I own a Crate 120W amp, and I don't normally have it up very high. So when I turned on my amp this afternoon to record some music, I switch it to the clean channel. What do I get? An incredibly distorted sound. I fiddle with the equalizer and replugged in my cables, but the sound was still that way.

Could it be a plug problem? Circuits? The speakers? It's normally quite a reliable amp, so I don't know what could've happened.

Get off my lawn.
Turn it off, turn all of the knobs a few times and try again starting on the clean channel. I dont know why but when some amps have been on the distortion channel for a while it's a little distorted still when you go to the clean channel.
Main Gear:

Santiago S3 Spanish Classical
PRS CE22 Mahogany
Mesa/Boogie F-50 combo w/ G12K-100
Teese RMC Wizard Wah
Rothwell Switchblade
Ibanez FL-9
Visual Sound Liquid Chorus V2