Mesa Boogie® Pot., A1M LOG, Solder lugs, Push-Pull
[Z-MB-A1M-PP]

Push Pull Pot, 1x ON, 1/4"  shaft, for MK IV as Gain control

suitable knob: MBK22  or MBK31 

used in:
Bass400+: Vol 1, Vol 2
DC5, DC10: Gain
Formula Preamp: Gain
MK II: Volume, Lead Drive
MK III: Volume, Lead Drive
MK IV: Gain (RHY1, RHY2, Lead), Lead Drive
F30, F50, F100: Gain

Recomendations for Mesa Boogie® Pot., A1M LOG, Solder lugs, Push-Pull: Amp Knobs [MBK22] Mesa Boogie® Potiknob, Mesa Boogie, 22mm Diameter, 1/4" Shaft, 0-10, Set-in Screw primary use Mesa Boogie® DC Series, MK4 etc. Photo shows 28mm Version.   12,50 Euro [MBK31] Mesa Boogie® Potiknob, used on the MK III etc. Mesa Boogie, 31mm Diameter, 1/4" Shaft, 0-10, Set-in Screw primary use Mesa Boogie® MK III and many others   12,50 Euro