Allen, as a general rule electricians are not electrical engineers and therefore, no not what they speak when it comes to benefits of electrical tweaks.
Everybody has dirty AC and therefore everybody can benefit from properly treated AC, every digital source injects noise back into the wall for other components to pick up, and most any amp requiring a decent amount of current draw will benefit from a dedicated ciruit/line even at lower listening volume levels.
The only advice I would suggest following from your electrician is when it comes to safety as some to many do know about that.
-IMO
Everybody has dirty AC and therefore everybody can benefit from properly treated AC, every digital source injects noise back into the wall for other components to pick up, and most any amp requiring a decent amount of current draw will benefit from a dedicated ciruit/line even at lower listening volume levels.
The only advice I would suggest following from your electrician is when it comes to safety as some to many do know about that.
-IMO