K-Tuned All-In-One VSS Converter - KTD-SC-AIOSpecifications: Manufacturer: K Tuned Reference Number: KTD SC AIO Type: The K Tuned All In One Adjustable VSS Converter was designed to merge all of our original VSS units into one simple and easy to use programmable speed correction unit. By connecting the unit via USB to any Windows based computer and using a simple downloaded computer application you can select from the following 3 settings to accurately adjust and calibrate your speed signal: 1)