This study empirically analyzes the impact of the diversity of three channel types (the information search, technology acquisition, and collaboration channels) on four types of innovation (service, process, organization, and marketing) performance using data from a sample of service firms of the Korean innovation survey. The results of this study indicate that innovative service firms tend to rely heavily on the diversity of information search channels for all four types of innovation performance, while their reliance on the diversity of the technology acquisition channel and collaboration channel is considerably low. The results contribute to a deeper understanding of channel management strategies for better service performance.