Configuraciones:
OBP-3TK: Includes separate Treble, Mid, and Bass pots, and black mini-toggle switch for Midrange frequency selection
OBP-3TK/PP: Includes separate Treble, Mid, and Bass pots. Mid pot is push/pull for Midrange frequency selection
OBP-3SK: Includes stacked Treble/Bass pot, Mid pot, and black mini-toggle switch for Midrange frequency selection
OBP-3SK/PP: Includes stacked Treble/Bass pot and separate Mid pot. Mid pot is push/pull for Midrange frequency selection
