[Amps] bypassing control leads

[Steve Flood]

My homebrew amp has 3 compartments - the RF compartment, an under-chassis compartment for the input and control circuitry, and a front subpanel area for metering and control knobs and switches.

What is the preferred method for routing control leads from the under-chassis compartment out through the subpanel to the various meters/knobs/switches.   A grommetted hole with bypass caps on the inside?  Feed-thru caps?

The Orr handbook (23rd ed. p.12-10) has a comparison diagram of various lead filtering setups.  The most bang-for-buck appearing to be a single .01uF Sprague hi-pass feedthru cap.

Steve KK7UV