multiple preamp outputs

I built an SP8


In some of the pictures, I see multiple outputs. There are resistors connecting the hot contacts on the RCAs

What values are these resistors, and why are they there?


I am assuming they prevent some type of loss that would occur from just wiring the outputs in parallel, correct?

I usually use 1K resistors, the value isn't critical, it just provides a little bit of isolation between the two outputs,
and isn't absolutely necessary.

and more parts in the signal chain.