Overview of the DMC-842's most important features:

• Fully compatible to AES42
• 8 XLR AES42 inputs (AES3 compatible)
• 8 balanced XLR Line outputs
• 24 bit sample rate conversion switchable per input
• Digital Phantom Power switchable per input
• Supports Mode 1 and Mode 2
• 63 dB gain range per channel, even in asynchronous Mode 1
• LED level meter with 13 LEDs per channel
• M/S de-/encoding
• 4 x AES/EBU Out via D-sub, 8 channels @ 192 kHz
• 2 x ADAT Out, 8 channels @ 96 kHz
• Optional MADI I/O (I64 MADI Card) with serial cascading and digital/analog return path
• MIDI I/O
• Fully remote controllable
• Future-proof by flash updates

More information you can find here: RME DMC-842