This 1953 GA-20 model features an earlier circuit with octal preamp tubes, delivering a rich, crunchy midrange sound when overdriven. The power cord and electrolytic caps have been replaced, along with a couple of power resistors. The original wax coupling caps have also been replaced. It has a newer Mojotone Transformer installed, which does great justice to preserving the sound of the original. Condition wise it looks very good, with some tape residue and a couple small tears on the edges, which can be considered moderate wear from being transported over the years.