Reviews of Attainable Hi-Fi & Home-Theater Equipment

Reviews of Attainable Hi-Fi & Home-Theater Equipment

To Doug Schneider,

This might seem like a dumb question, but here goes: What is a 12V trigger? I keep reading this in reviews, but nobody says what it does.


That's not a dumb question and, you’re right, it is mentioned a lot in reviews, but few reviews describe exactly what it does. In fact, I’m pretty sure that I’m guilty of that in some of my reviews.

Trigger inputs and outputs are convenience features used to turn components on and off. They operate at 12 volts, which is what 12V means. For example, a preamp can be used to turn on an amplifier that’s connected to it. Or you could have a CD player trigger a preamp which, in turn, triggers an amp. I suppose if you wanted, you could get trigger-happy and chain a bunch of components together. What you do to make this work is simply run the appropriate wire from one component’s trigger output to another component’s trigger input and, presto, you have the convenience of one-button operation. . . . Doug Schneider