I know that the impedances should be matches so the input impedance of the device is around 10 times bigger than the output signal that goes to this input. But is there a limit?
If I have a signal coming out of the device and its 1k ohm then I'd load it into something with impedance around 10k (line level). But what would happen if I loaded it into input that has around 1 milion ohms (instrument level)? Will the signal be attenuated so I can hear it because it's too weak? Where's the boundary that shouldn't be crossed? Or is there any?