DF4 Master Study (Safety and Efficacy Study)

Inclusion Criteria: * Patient has provided written informed consent. * Patient has standard ICD/CRT-D indication. * Patient accepts Home Monitoring concept. * Patient is able to attend the planned hospital follow-up visits. * Patient has legal capacity and ability to consent. Exclusion Criteria: * Patient has a standard contra-indication for ICD/CRT-D therapy. * Age \< 18 years * Patient is pregnant or breastfeeding. * Patient is expected to receive ventricular assist device or heart transplantation within the next 12 months. * Life expectancy of less than 12 months. * Participating in any other clinical study of an investigational cardiac drug or device.