DebMe2

I purchased my 2006 Outback Wagon Turbo one year ago. I've never owned a turbo before.Upon any acceleration there is a vibration that I thought was the Turbo engine, but my daughter and son in law said the tires were out of balance. I had the tires balanced and the vibration still happens. The mechanic suggested it was the carrier bearing. He said it is not a serious mechanical issues, just mostly annoying. Does anyone know what may cause this, as I have researched the carrier bearing issue and I am not convinced. If it is something that needs attention, I want to repair it. I love my car and want to keep it a long time.

Just have questions