Son of a B*TCH! I tried this! It SUCKS!
I was in a Jack in the Box drive through and when I went to turn on the tunes I decided to pull out the balance knob. I thought hey, what the hell...
I was pulling and pulling, and nothing was happening. Then the f*cker flew off and out my window. Luckily I had a passenger who I made get out and look for it while I was waiting for my food... THAT SUCKED! The thing flew pretty far, out the window and into some grass. Luckily my competent passenger recovered it! I guess my 93 L doesn't have that feature!
UPDATE:
The fade button works, DONT PULL HARD ON THE BALANCE ONE!

The effect is pretty cool...