A:Answer Hi Alex,
Thank you for the inquiry! The main differences are as follows:
HT-A5000: speaker structure is 5.1.2ch, sound mode (Standard, Sound Field), 2 HDMI ports (eARC/ARC), amplifier channel total of 9.
HT-A7000 speaker structure is 7.1.2ch, sound mode (Auto Sound, Cinema, Music, Standard), 3 HDMI ports (eARC/ARC), amplifier channel total of 11.
More details on our Sony support website.
https://www.sony.com/electronics/support
-David