Home Audio over IP Stereo to multi-stereo IP Audio Codec IQOYA X/LINK
  • Overview
  • Specifications

Stereo to multi-stereo IP Audio Codec IQOYA X/LINK

Key Workflow: Studio to transmitter links, Studio to studio links, studio to DVB/DAB multiplexers, studio to WEB radio CDNs.


IQOYA X/LINK is a 1U rack audio codec designed for the delivery of one or several audio programs over IP networks. It can be used in legacy analog and AES/EBU audio infrastructures, as well as in full-IP infrastructures, thanks to the support of Livewire, AES67, and RAVENNA technologies.

At a glance

IQOYA X/LINK is based on a low consumption, fanless, and robust dedicated hardware platform powered by two redundant power supply units. It features 4 analog audio I/Os, 2 stereo AES/EBU I/Os, and supports synchronous AoIP I/Os (Livewire, AES67, RAVENNA). It supports from one to eight stereo I/Os, and allows for multi-format and multi-protocol encoding and streaming of each audio source.
The four network ports allow for the full separation of IP traffics: control and monitoring, redundant dual streaming through two network paths, and synchronous AoIP (Livewire, AES67, Ravenna)
Using the well-proven Digigram advanced FluidIP™ technology, IQOYA X/LINK offers a rich set of features allowing for the reliable transport of audio content over managed and unmanaged networks (FECs, redundant dual streaming with time diversity, VLANs, QoS, IGMPv2 and v3), and for the continuity of audio service on transmitter sites (3 backup levels, backup on SD card, switchable hardware by-pass of the first audio input to output in case of power supply failure).

  • Designed for 24/7 operations: 2 redundant power supply units, fanless, dedicated hardware design, Digigram Fluid IP™ streaming engine.
  • Full separation of IP traffics via 4 network ports, and multiple VLANs
  • Audio I/O channels can be selected among 4 mono analog channels, 2 stereo AES/EBU channels, and Livewire/AES67/RAVENNA channels.
  • Reliable IP streaming: FECs, redundant dual streaming with time diversity, management of network errors, real time network metrics
  • Continuity of audio service on transmitter site (3 backup levels, hardware by-pass of the first audio I/O in case of power supply failure)
  • Wide range of supported audio formats
  • Optional GPS synchronization
  • Optional synchronization of decoders via NTP, or PTP
  • AES/EBU transparency via PTP or GPS clock synchronization
  • Full remote control, monitoring, and alarming via SNMP and from WEB GUI


Key features

  • Low consumption and fanless platform adapted to transmitter sites (strong resilience to EMI)
  • Dual redundant internal power supply units: 2x 220VAC, or 220VAC / -48VDC
  • Four network ports for full separation of traffics: Control/monitoring, redundant dual streaming, AES67
  • Support from 1 to 8 stereo I/Os (upgrade via software licence)
  • I/Os can be selected from 4 balanced analog I/Os, 2 AES/EBU I/Os, and Livewire, or AES67 or RAVENNA streams
  • Audio formats: G711, G722, PCM16/20/24 bits, Opus, MPEG L2 & L3, Fraünhofer AAC-LC, AAC-LD, AAC_ELD, HE-AACv1, HE-AACv2, and optional Qualcomm aptX™
  • Multi-format encoding and multi-protocol streaming of each audio source
  • Streaming protocols: RTP, UDP (both with or without MPEG-TS/IP SPTS and MPTS encapsulation), Icecast/Shoutcast
  • Unicast, multi-unicast, multicast, multi-multicast (IGMPv2 and v3)
  • VLAN tagging (IEEE 802.1q, 802.1p), DSCP
  • SNMP (SET,GET, Traps)
  • FECs and redundant dual streaming with time diversity up to 3 seconds
  • In-band auxiliary data tunneling (serial data,  4 GPIs)
  • Continuity of audio service on transmitter sites:
    – 3 backup levels
    – Backup sources: IP stream (RTP, Icecast/Shoutcast),  playlist/ sound files on local SD card, audio inputs
    – Switchable hardware by-pass on the first stereo analog and AES/eBU I/Os in case of power supply failure
  • Silence detection on audio inputs and on received IP streams and associated alarms
  • Real time metrics on received RTP streams
  • Optional synchronization of decoders on NTP or PTP
  • Optional synchronization on GPS clocks (10 Mhs and PPS)
  • Intuitive web interface with access rights
  • Front panel LCD display and keypad
  • 4 LED vu-meters on Front panel


  • User’s manual from the Digigram Website
  • One year warranty



  • Dedicated hardware platform with strong EMC resilience (10 V/m)
  • Fanless design, low-power consumption <10 W
  • Lightning protected network interfaces
  • Digigram  FluidIPTM  streaming engine
  • 3 levels of backup with selectable source:

– IP stream: RTP or Shoutcast/Icecast on any of the 2 network ports
– Physical input (analog or AES/EBU)
– Sound file or .m3u playlist on SDHC card

    • Configurable backup switching criteria (IP stream loss/recovery duration)
    • Alarm upon silence detection on audio inputs

Professional quality streaming and continuity of service

  • Simultaneous encoding and decoding at the same audio format or different formats
  • Multi-format and multi-protocol streaming of each input source
  • Dual redundant streaming (unicast, multicast) with time diversity (up to 3 sec of delay on the redundant stream)
  • Real time measurement of network path quality for main and backup streams
  • Management of network conditions (jitter, lost packets, duplicated packets, disordered packets)
  • Selectable FECs as per RFC 2733  (+10%, +20%, +33¨%, +50%, +100%)
  • AAC error concealment implementation
  • Optional audio synchronisation of several IQOYAs via PTP or NTP
  • AES transparency through PTP, or optional 10 MHz synchronization
  • Ultra low latency (e.g. typical 7ms in PCM, 10 ms in Enhanced-aptX, analog end-to-end)
  • Hardware by-pass of the first stereo analog and AES/EBU inputs to outputs in case of power failure


  • FNS/ACIP compliant IP audio transport (EBU Tech 3326) (RTP/UDP)
  • HTTP streaming (Icecast/Shoutcast)
  • MPEG-TS/IP streaming (UDP or RTP)
  • Auxiliary data transport: in-band RS232 (RDS UECP) and GPIOs data tunneling

Advanced Networking

  • 4 RJ-45 IP ports for full separation of IP trafics ( WAN IP audio, dual streaming, LAN IP audio (Livewire/AES67/Ravenna), management
  • VLAN tagging (IEEE 802.1Q, 802.1p)
  • DSCP support
  • Unicast, multi-unicast, multicast, multi-multicast (IGMPv3)

Administration and supervision

  • Control, monitoring, alarming through SNMP (SET, GET, Traps) with MIB
  • Alarms activable on GPOs, SNMP traps, and log traces
  • Persistent log file in case of power failure
  • Intuitive and secure WEB connection (https) and FTP connections
  • WEB user rights management: Read Only, User, Administrator
  • Save/load full codec configuration on SDHC card

Physical specifications

  • Size: 19 1U” rack
  • Standard power supply configuration: 2 internal PSU 100 – 250 VAC, 50-60 Hz switching-mode, automatic voltage detection
  • Optional power supply configuration:: 1 internal PSU 100 – 250 VAC, 50-60 Hz switching-mode, automatic voltage detection, with one -48VDC PSU
  • Temp / humidity (non-condensing)
    Operating:  0°C – 50°C / 0% – 95%
    Storage: -5°C – 70°C / 0% – 95%
  • Power consumption at 240 V / 100V: 0.11 A max. / 0.27 A max
  • Net weight : 3.1 kg (∼6.85 lbs)

Audio specifications


  • Analog line inputs (mono): 4 balanced
  • Maximum input level/impedance: +24 dBu / > 10 kΩ
  • Digital input: 2 stereo AES/EBU
  • Analog input gain: 0 dB to +18 dB in 0.5 dB steps
  • Sampling frequencies available:
    analog: 44.1 kHz up to 192 kHz at 24-bit data quantization
    digital (AES): 22 kHz up to 216 kHz using SRC at 24-bit data quantization
  • Dynamic range (A-weighted):
    Input gain 0 dB:> 100 dB (TBC)
  • THD + noise 1 kHz at –2 dBfs:
    Input gain 0 dB: ~ -90 dB (TBC)
  • Analog channel cross talk at 1 kHz:
    1 kHz: < -100 dB (TBC)
    15 kHz: <-100 dB (TBC)
  • Frequency response: 20 Hz-20 kHz +/- 0,3 dB at 48 kHz (TBC)
    Additional inputs: 4 Opto-Isolated GPIs


  • Analog outputs:
    4 servo-balanced mono audio outputs, maximum output level = 24 dBu
    Headphones: max. output level = 8 dBu (2×50 mW / 2×32 Ω load)
  • Impedance: < 50 Ω
  • Sampling frequencies available: 44.1 kHz up to 192 kHz at 24-bit data quantization
  • Signal-to-noise ratio:
    Line: ~ 107dB, output ref +23 dBu for -1 dBfs, output impedance > 5 kΩ (TBC)
    Headphones: > 90 dB at 2×50 mW / 2×32 Ω (TBC)
  • THD + noise at 1 kHz
    Line: ~ -90 dB, output ref +23 dBu for -1 dBfs, output impedance > 5 kΩ (TBC)
    Headphones: < -60 dB at 2×50 mW / 2×32 Ω (TBC)
  • Crosstalk at 1 kHz
    Line: < -100 dB at 1 kHz, output ref +24 dBu for 0 dBfs, output impedance > 5 kΩ (TBC)
  • Frequency response at 48 kHz: 20 Hz-20 kHz +/-0.3 dB (TBC)
  • Additional outputs
    Stereo headphones (6.35mm jack), max 2×50 mW / 2×32 ohm load
    4 relay GPOs characteristics: – 3 SPDT outputs: common, norm. open, .norm. closed,
    – max 220 VDC/250 VAC,
    – max 60 W, 62.5 VA
    – max. continuous/switching current: 2 A/3 A


  • Analog line inputs 1&2: 2 female XLR-3
  • Analog line inputs 3&4: Sub-D 25 pin connector
  • Analog outputs 1&2:  2 male XLR-3
  • Analog outputs 3&4: Sub-D 25 pin connector
  • Digital input: 1 female XLR-3
  • Digital input 2: Sub-D 25 pin connector
  • Digital output: 1 male XLR-3
  • Digital output 2: Sub-D 25 pin connector
  • Headphones output: 6.35 mm jack
  • IP network: 3 Gbits + 1 x 100Mbps ports on  RJ-44 connectors
    GPIOs: 1 female Sub-D 25
  • 10 Ghz + 1 PPS

Additional ports

  • RS232 (UART): 1 male Sub-D9
  • SD card reader for SDHC memory card
  • Audio formats:

  • PCM linear 16/20/24 bits
  • ITU G.711/722
  • ISO MPEG-1/2 Layer I, Layer II, Layer III
  • Qualcomm aptX
  • Opus

Management Network protocols

  • HTTPS web server
  • SNMPv2 SET, GET, Traps
  • FTP (for SDHC card content management)



  • Low TCO: proven technology,  high MTBF (>100 years), no preventive maintenance
  • Suitable for legacy audio connections, and for end-to-end IP infrastructures
  • Activation of additional I/O channels when needed through software option
  • Ongoing product support through Digigram Support & Maintenance contracts