FWIW, I'm using a RS mono cable for the DC trigger from my DHC-9.9 to the PF 60 with no problems. Programming the appropriate PF 60 banks for "switched", with delays for the amps, allows one button ON/OFF control for the DHC-9.9, TV, DVD,CD, and 3 power amps. Cable box uses an "unswitched" bank.

Just in the interest of being fair to RS, I've never had a problem with anything I've bought from them....quite a lot of stuff over 30 yrs.