Brass Shaft for JB Electric Bass Custom Circuit

JB Brass Shaft Electric Bass Custom Circuit

Optional control knobs from the second image can be purchased as a set (+720 yen).
Please inquire before purchasing.

For those who purchase, I can offer advice on parts installation, body adjustments, string selection, and more, if desired.

This is a custom circuit with metric-sized brass shafts.
Outer diameter of the pot shaft base is 8mm, and the head is 6mm.
Jack outer diameter is 9mm (inner diameter is for standard shield jacks).

These have short shafts, making them suitable for JB control plates and PB pickguards.
If your body has a control cavity on the back, the shaft length may be insufficient.

Uses superior pots with smaller numerical error and signal loss than CTS.
These are high-grade OEM products, proven performers, selected after actual measurement of their performance, even though they are unbranded.
Their performance is clearly superior to famous brands whose sales strategy is limited to pots for musical instruments.

Durable brass shafts,
Cross-wire wiring method that prevents disconnection due to loosening or rattling while eliminating waste that leads to signal loss,
Orange Drop capacitor for a circuit that is physically and functionally stable.

This item is assembled with all A250k pots and 473 capacitors for deep tone control.
While active EQ might be an exception, I see no rational reason for using B-type pots in passive circuits.
If you have a circuit with B-stamped pots, it's worth replacing them just for that reason.
Please consider this as an upgrade for your underperforming parts.