WiFi Receiver
Power Supply
Amplifier
5V Converter

Not included above are a pair of 1kOhm 1/4 watt resistors, a single 4.7uF non-polar electrolytic cap, and a scrap piece of aluminum that I think I pulled from a powered sub years ago.

You can always step down the voltage with a buck converter.

https://www.amazon.com/Converter-Regulator-Adapter-Reducer-Electronics/dp/B07Q5W1BG3/