All available original Standel schematics are listed here. A list of repair techs for solid state and hybrid amplifiers (which feature different modules) here. The list of currently available Standel tube amplifiers and available options are listed here. Standel restores vintage tube amplifiers based on originals in our collection, at bench rate of $100 per hour. Standel regrets that it does not possess the archival info to offer parts, information/valuation, or troubleshoot vintage Standel amps/speakers.