A little background: I'm hoping to take the PWM from the Disney Parks Made with Magic Ears in order to drive a short 12V strip of LEDs (Here's a teardown. After taking a pair apart and testing, I know the tri color LED is being driven by 1.6 V ( I was also able to wire another RGB LED in series). From what I've read, the LED amplifier will boost 3-5V signals to 12 V.

My thought is something like a MOSFET or WLED driver would work? I'm also concerned about too much current through the existing ear circuit.

Any guidance would be appreciated!