One suggestion will be to use a combination of Stabilizer+UPS for your setup. You can connect the AVR and subwoofer module to stabilizer and connect TV and PS4 to UPS. So even when power goes you can still save your game and exit if needed. If you have a backup generator at your place then this UPS will save you the pain of restarting everything when the generator kicks in after few seconds.
Vguard model recommended above is the best one and for UPS you can go with a 600va one from APC. Combined cost will be approx 5K.