Got this one for a small amount of dinero. Seller was original owner ! It has the Sheffield 12" and the footswitch is included. Back of chassis: ground switch, external speaker, footswitch, power amp input, preamp out. Effect loop on front panel. All pots need cleaning, but the rest is pristine ! Played it a bit last night. Cleans are beautiful and rich. It will make a great amp for pedals. Have only skimmed the gain side, that could take some taming.