Golden Cello

Controls
VOLUME: adjusts the final output level of the effect.
TONE: controls mainly the treble, sound can be set from soft to sharp.
DISTORTION: sets the sustain and distortion level, from light to saturated.
DELAY: sets the level of build in delay.

Inside the pedal there are trimmers for delay repeat and delay length (two trimmers, that have to be in balance), and trimmer for the volume into the delay part of the pedal.

Electrical Specifications:
Current draw @9VD:V 43mA
Input impedance: 70K Ohms
Output impedance: 50K 0hms
Supply voltage: 9-12VDC

https://www.mpamp.com/factory-pedals/golden-cello-factory-pedal/