If you replaced the 10k collector resistor of a Tone Bender MkII with a pot...

[Dom D]

would it work similar to the Boost knob on a Rangemaster?

Has anyone ever isolated the boost stage of a TB before?

[LucifersTrip]

I believe it's different since the wiper of the rangemaster is connected to the center of the pot...and the rangemaster also has a pull up & down resistor on the base and a resistor/cap combo from emitter to ground

I think if you alter the 10K on the MKII, you'll just throw the bias off.....or adjust it to your liking.