What are the differences between mini-i 4 and mini-i Pro 4?

[Wei Cao]

1. mini-i Pro 4 has a built-in headphone amplifier, while the mini-i 4 does not have a built-in headphone amplifier.
   
2. mini-i Pro 4 supports both Wi-Fi and Ethernet connections, whereas mini-i 4 only supports Ethernet connection.
   
3. mini-i Pro 4 comes with the RM5 remote control as a standard accessory, while mini-i 4 supports the RM5 remote control but it is not included as a standard accessory.