I made this to use personally but it turned out to cool not to throw in the lineup.
It's basically a kill switch with latching and momentary switches, but you can also control the amount of signal killed. So it can also be used as a reverse boost so to speak.
Passive, simple and effective. Power is only used for LED indication.
MCP and me approved. End of line.
Smaller 4.7" x 2.6" x 1.5" 125B sized enclosure, true bypass switching, common 9vdc center negative BOSS style power input and battery snap. Current draw ?mA. Power supply not included.
$8-US, ($20-Canada/$25-International not including potential VAT or Customs fees)