Osprey Raptor M25 features two SDI Inputs rated at 3Gb/s. Ports work with SD, HD and 3G frame sizes. All Mxx Raptor Cards can capture up to 60fps. Each SDI Input supports 16 Audio Channels (8 Stereo Channels) for a total of up to 32 combined Audio Channels between all inputs. Input B is programmable as Input or as Loopout from Input A.