The SC3.5 is produced and delivered since 2000. First as Whisper 3500 (Mastervolt), later with the introduction of the DDC, it's renamed as the Whisper 3.5. (Mastervolt) . Later the name changed to Whisper Power, these models are sold as SC3.5. the DDC is introduced in early 2005, first in an external box. In 2009, the local control panel together with the DDC controller, mounted on the generator. The voltage is regulated by means of capacitors. Below you can find a complete overview of all the parts wich are suitable for these models.