There's a difference in operation in the volume- and tone department: when I cut back treble and bass settings on mine completely down to zero, the master volume remains unaffected, irrespective of the level of volume that was dialed in. I sometimes do this -in combination with my Boss GE-10 Equalizer- to get a certain vintage 'studio sound' for solo electric guitar a-la Hank Marvin and to cut through the mix much better …I have no problem leaving the heavier tones to the Bass player!
![Smile :)](./images/smilies/icon_e_smile.gif)
My band mate wanted to try the same thing on his amp and to our amazement we discovered that when he cuts back his treble-, mid- and bass settings, the master volume is killed…completely, as in dead! i.e. his tone knobs work also as volume knobs!
![Confused :?](./images/smilies/icon_e_confused.gif)
Did Fender design it this way or could it be due to faulty wiring? He did have a repair on it at one time…perhaps a "Friday repair"?
I find it strange; my other Fender amp (Custom Vibrolux Reverb RI -tube) operates in the same way as my solid state Princeton 112 –leaving the volume level unaltered -at any given chosen setting.
Thus far, I have not yet managed to find an answer googling on the internet and paging through owners’ manuals, online.
I guess I need some amp education…anybody?