So, I have a chinese or DIY like 2 band bass preamp installed on a one pickup Ibanez bass. However, I’m stuck in the process of getting it connected. Basically the preamp has these connection cables:

Red – 9v
Black – Ground
White – preamp out
Blue – preamp in
Yellow – Treble (?)
Orange – Bass (?)

The circuit has 1 pickup,1 vol, 1…

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