I am so bummed. I just got done testing my ads P440 amp using speaker level inputs and it doesn't work. I created some RCA adapters to connect the speaker wires from my factory stereo to the inputs on my ads P440 amp. I connected the power, the remote, the speakers, the RCA's. Everything looked good at first. I had a blue power light on the amp showing that it was powered up and ready to go. But as soon as I turned on the stereo the power light on the amp went out. I spent some time trying different configurations, bridged and un-bridged. But what I found was that as soon I connected the RCA's to the inputs the power light on the amp went out. In fact, all I have to do is touch one of the speaker wires to the input and the amp powers off (even with the volume turned all the way down). I guess at this point I have to assume that this amp will only accept line level inputs. Let me know if you think I missed something.