Reported by Tom Perconti in a comment on Paul Martinez's fb post:
  * https://www.facebook.com/groups/209280506324242/permalink/317103928875232/

HDMI TO HDMI+AUDIO\\
  * https://www.amazon.com/gp/product/B076MNY1RD\\

Specification:\\
Input Port: 1 x HDMI IN, 1 x Micro USB Power Port, 3 x EDID Audio(Pass/2CH/5.1CH)\\
Output Port: 1 x HDMI OUT, 1 x SPDIF (Optical), 1 x 3.5mm Jack\\
HDMI resolution :4K x 2K, 24/50/60fs/1080P/1080i/720p/576p/576i/480p/480i\\
Support video color format: 24bit/deep color 30bit,36bit\\
Max bandwidth: 225MHz\\
Max baud rate: 6.75Gbps\\
Max working current: 190mA\\