The fixed hole distance of the recording head: 12.5 mm (measure the center distance between the two holes).
There are four wiring marks at the end of the singing head: R +, R-, L-, L-.
In general, the wiring colors at the end of the turntable are: r + = red, R-= green, L + 

= white, and L-= blue.

Recommended needle pressing range: 1.5g-2g, can be adjusted according to personal preference