Upgrade or tweak? Are you using a line conditioner, if not you should. You might want to consider a Furutech Rodium outlet, I put one in and heard a 20% improvement right away.
Are your cables laying on the floor? Get them up off the floor for a quick tweak.
My 2 cents worth.
Dave
Are your cables laying on the floor? Get them up off the floor for a quick tweak.
My 2 cents worth.
Dave