Handwired 5F6A Bassman 4 Fender alnico speakers . Has a Lar-Mar master volume . You can find the sweet spot at a lower volume , Much better than a Fender circuit board reissue and doesn't cost $3700 to $6400 vintage amp full of very old parts. you can buy a top quality clone for the cost if a " reissue" printed circuit board Fender amp