Tell us about yourself!
Flat Pack Furniture
Prepping and Laser Cutting
Laser Cutting Class
Oh probably, but the whole point of my comment is that without a resistor your technically shorting the output. An LED is only a diode, so any voltage above the diodes voltage drop is actually being fed back at a near infinite current (or at least at the max current the driver can supply). All due to ohms law.AC has nothing to due with it, the reverse voltage threshold will likely be higher than any typical audio device can provide.
Cool idea, but why no series resistor? This looks like a good way to damage your phones audio output
I wouldn't recommend this. Without a resistor you're only going to damage your LEDs and drain your batteres your excessively fast.