I first had trouble with 12V trigger and my Onkyo 805 until I realized that it may not necessarily work with a stereo jack. I switched to mono and it started to work just fine. Were you using a mono or stereo 1/8 cable?
Yes, I tried two different mono 1/8" cables and double checked the settings in the Integra. No response on the A1400-8 side
. I have not tried this feature with the Sunfire (even though it has it) as I prefer the signal sensing "Auto On" feature. Works great and one less cable to mess with.
