Audio equipment giant

Year-opening month, for short3 Jam and jelly's holder3 Childhood nickname for Darth Vader3 To the ___ degree (utmost)3 ___ out a living (barely manage)3 Mount ___, active volcano in Italy4 ___ Rogers, "The Gambler" singer who has won 19 AMAs5 Giga, tera, peta, ___ (anagram of "axe")3