Zolkowpreamps 1.3 stacked bass guitar electronics

Description

huendeskes
3-band bass guitar electronics, as you see in the picture, minus the mousepad, domestic postage included in the price.
Both potentiometers are center-detented: boost/cut.
The dual ones have solid shafts of 6 and 8 mm diameter, the single one requires a 6 mm hole, 9.5 mm or 7 mm. Long shafts, suitable for rear mounting as well.
PCB size is 25x33 mm.
Current consumption is approx. 1 mA, with average use you can expect about 1 year from a durable battery. It runs on 9V, do not use with higher voltage!
The position of the mid and high frequencies can be selected with a jumper (400-600-800 Hz, or 4-6-8 kHz), the bass is fixed at 40 Hz.
A wiring diagram is naturally included.