Canal Digitaal DSR 8121. Audio output channels: 7.1, Impedance: 75 Ом, Frequency response: 950000 - 2150000 Hz. Speakers connectivity type: RCA, Connectivity technology: Wired. Audio formats supported: AAC, MP1, Video formats supported: H.264, MPEG2, MPEG4. Data transfer rate: 2 Mbit/s. Compatible memory cards: Smart