PVE 500 D / PVE 501 D: 500W Relay Type AVR w/ Power on Delay, Output 220V AC

Good day! Servo motor type AVR regulates faster (in milliseconds) and is more precise in its voltage regulation (exact 220V at all times, so long as the input voltage is within the 160V – 240V AC range), while relay type AVR regulates within 1 second and regulates by blocks. For typical household appliances that are not sensitive, Relay type AVR is enough. However, given the description of your sound system, you may want to consider the Servo Motor type AVR instead. Here’s the link to our PVS 500 (500 Watts Servo Motor AVR): https://panther.ph/product/pvs-500-servo-motor-type-avr/ Take note: Servo Motor AVR may require recalibration after a few years of constant use. You can have it recalibrated by Panther through our Lifetime Service Warranty For a more detailed breakdown of the difference between the Servo Motor Type AVR and Relay Type AVR, please see this article: https://panther.ph/difference-between-servo-motor-type-avr-and-relay-type-avr/ We hope this answers your questions!