Can someone who either owns, has owned, or knows someone who owns an AMP (Amplified Music Products) BH-420 bass head, tell me what size fuse it takes? The head I bought needs an electrical cord and a fuse. I bought a cord, but the writing on the back of the head is worn off around the fuse holder and I can't make out what size fuse is required. Any help or info will be greatly appreciated. Thanks !!!