RAV.IO is an audio network module for the PRODIGY Series and MAVEN.A to interface RAVENNA streams.

Optional available as RAV.SRC.IO with sample rate conversion (HD SRC) on board.
The PRODIGY Series also offers low latency sample rate conversion (FastSRC™) for input and output.

Three network ports can be configured to connect with two independent networks or for redundant transmission according to ST 2022-7. It interfaces up to 128 audio channels (input and output).

The amount of audio channels is reduced at higher sample rates - 64 channels @ 2 FS or 32 channels @ 4 FS.

RAVENNA is an open audio networking technology developed initially by ALC NetworX.

DirectOut's own RAVENNA implementation relies on more than ten years of development.

As a successful participant of the JT-NM Tested program RAV.IO is listed in the JT-NM Tested Catalog as a module aligning with the SMPTE 2110 standards.

Knowledge source about RAVENNA 

  • 32 streams
  • 128 channels (1 FS), 64 channels (2 FS), 32 channels (4 FS)
  • 500 ms buffer (WAN capable)
  • Sample rate 44.1 kHz up to 192 kHz
  • Sample rate conversion (RAV.SRC.IO and FastSRC™ in PRODIGY Series)
  • Stream redundancy ST 2022-7
  • Switch configurable (NIC1 & NIC2)
  • Compliant with AES67, SMPTE ST 2110-30 / -31
  • Ethernet layer 3 ('Audio over IP')
  • 2 x RJ45 gigabit ethernet / 1 x SFP* supporting optical connection
  • PTP Hybrid Mode
  • Remote control via browser
  • NMOS IS-04 (stream discovery)
  • NMOS IS-05 (connection management)

* compatible with SFP MADI Transceiver LWLAB optical LC Multi Mode / Single Mode and SFP Transceiver HD-BNC coax, available from DirectOut GmbH