krank fx boost pull brighter?

reneisgod

Rene
Aug 28, 2006
925
2
18
Scotland
en-gb.facebook.com
when i release the FX boost pull knob on the rear of my Krank Krankenstien
the amp sounds alot brighter, why is this?
And is it generally safe to play the amp with the fx boost released,
I just discovered this by accident and its got me a bit baffled.

cheers