(GRETSCH)RED Electromatic Center-Block Bono Signature This isn’t the first signature Gretsch with Bono’s name on it, but it’s the reddest. The (GRETSCH)RED Electromatic Center-Block Bono Signature bears the (RED) logo. (Product)red co-founded by Bono in 2006, partners with companies to create products. The sale of (products)RED see a portion of their profits go to fight