parallel cap and resistor passive loop

[sergio]

What is the function of resistor(220k) and cap(250pf) in parallel?
If jack don't connected , the signal pass in through their , is not better if the signal go directly to PI after master pot?
Thank

[Funkalicousgroove]

It's a filter, it's only in place when the loop is not connected.

Methinks it's for use with ES335/Les paul and other generally bass heavy guitars to keep them from "Flubbing" . JMHO.

[Bob-I]

What is the function of resistor(220k) and cap(250pf) in parallel?
If jack don't connected , the signal pass in through their , is not better if the signal go directly to PI after master pot?
Thank

I've never used this setup. I've just connected directly.

[ic-racer]

is not better if the signal go directly to PI after master pot?
Thank

I think it is a question of HAD tailoring each amp to the buyers taste/guitar/technique.

I think this picture was originally posted by Funk, it shows a mid-80s blackface ODS (SN not given) with the older style power capacitors (like #124) and it does NOT have the filter capacitor and resistor on the send-return jacks.