Myles: You have given a hearty thumbs up for the Pierson Champ Amp. It looks great for studio work. Given its price of $620.00, is it far superior to a '70's Fender Vibro Champ that can be bought on Ebay for a couple of hundred of bucks? Am I naively comparing apples and oranges? I will spend the extra money if its tone is that much better. Thank you for your time. Dan.