I'm looking to send an audio signal about 80-90' wirelessly. It's pretty simple - the output device has a standard 1/4" or 1/8" jack and the input device has the same as they can be connected with wires. I was thinking bluetooth but not sure if that would be strong enough to send the signal. I'm assuming I'd just need to connect the output to some kind of transmitter and the input to some kind of receiver, but I'm not sure what to look for.
I'm looking for cost-effective suggestions on the best way to accomplish this. Thanks!