One Device. Unified IP Workflows.
For Reporting, Commentary & Off-Tube Remotes
ViA Duo - Redefining Broadcast Workflows
ViA Duo is the new generation of trusted ViA technology that truly bridges the gap between field reporting and commentary. Built for reporters and commentators alike, it is an ultra-portable broadcast platform that can operate as an IP codec, AoIP commentary node, or facilitate off-tube broadcasting through support for audio and video feeds.
Simply take the codec to the remote site, power it up, and connect to your preferred network and start broadcasting. There’s no need for additional outboard gear like mixers, equalizers, compressors, noise gates, expanders, recorders and playback machines – with ViA Duo it is all-in-one and ready to go!
ViA Duo supports HDMI video out, multiple AoIP protocols, plus IP streaming over multiple interfaces. It delivers an all-in-one solution consolidating your remote broadcast, commentary and off-tube broadcasting requirements into a single compact and lightweight box. It is ideal for:
- Reporters to use with a guest
- Two commentators broadcasting sports events
- Announcers working from home
- Talk show and other radio show hosts on the road
- Off-tube commentary, or use as a sports commentary unit over AES67, ST2110-30, Livewire, RAVENNA, or Dante (AoIP and Dante card is optional)
Watch the Video
Stadium TV Commentary
The ViA Duo can be used in a variety of broadcast commentary roles for radio and TV broadcasts. Optional support for AoIP protocols like RAVENNA, Dante, AES67, ST2110-30, Livewire and NMOS facilitates using ViA Duo as an AoIP node in stadium commentary booths or on the sideline. Flexible options include connecting over a LAN to a remote truck at a venue, or over a WAN with a REMI (Remote Integration) use case back to a mixing console at a studio hub.
Off-Tube Commentary
ViA Duo supports off-tube commentary so your commentary team can get a live game day feed and call live from wherever they are in the world – even from the comfort of their own home. You can even use the codec at a stadium and receive a video return feed from the studio including stats and other live or recorded elements of the broadcast. Paired with a real-time mix-minus comms feed, your commentary team will get the full picture.
Radio Commentary using Dante
ViA Duo seamlessly integrates with existing analog and AES3 digital infrastructure with optional support for Dante to deliver unprecedented flexibility for radio remotes. Featuring functionality for one or two commentators, you can also integrate Dante audio in/out to expand production possibilities. For example, use ViA Duo to integrate with other equipment like mixers, sound effects mics and more, and send full duplex stereo program audio back to the studio.
Flexible AoIP Inputs & Outputs
The default ViA Duo configuration includes:
- 2 analog mic/line inputs, or 2 AES3 inputs
- Digital USB C stereo auxiliary input/output
- 2 headphone outputs
Purchase the AoIP Licence* or optional internal Dante* card to expand broadcast and communications options. This provides 4 digital AoIP inputs/outputs in addition to 2 analog or AES3 inputs, and headphone outputs.
*Optional feature, additional purchase
Full Remote Control Anywhere, Anytime…
Full control is provided in all scenarios using either the Toolbox Web-GUI embedded in every unit, or the optional Cloud Codec Controller, which is designed for network management and remote control of all Tieline IP codecs
Features at a glance...

Stream, Record, Play
Stream live audio and view and manage recordings, create playlists of local and imported files, then control playback routing to encoders and other outputs. Record podcasts to removable media or upload via FTP

Use as an AoIP Commentary Unit
The multipurpose ViA Duo includes optional support for RAVENNA, Dante, AES67, ST2110-30, Livewire and NMOS for use in broadcast commentary positions or for secondary or sideline commentary positions.

Off-Tube Commentary with Video Out
A commentary team can receive a live video feed to call a game off-tube, or receive a video feed at the remote site.

Built-in Wi-Fi
Built-in Wi-Fi and web browser connectivity expands your connection options from access points in hotels, fast food chains, or even a smartphone’s Wi-Fi hotspot.

Flexible Cellular, Wi-Fi and
Ethernet Connections
Connect with dual Ethernet ports, or wirelessly with the internal global 4G/LTE modem or a USB aircard/modem, or use built-in Wi-Fi and smartphone hotspots.

Simple & Versatile
ViA Duo is designed with simplicity and portability in mind for user-friendly operation. Plus, each input and decoded stream has a compressor, EQ, Noise Gate & Expander.

Power on the Go!
Portability and performance with a rechargeable Lithium-ion battery. Extend battery performance with features like screen sleep time-out, brightness controls, and automatic low battery power saving measures*.

Admin/Basic modes plus Remote Control
Configure the codec to power-up automatically in ‘Basic Mode’ to simplify operation and take the hassle out of broadcasting for non-technical users. Fully remote control with the Cloud Codec Controller or Toolbox web-GUI.
*Battery life may vary depending on the type of connection and power-saving mode configured
AoIP Interfaces
AES67 Ready
Native support out-of-the-box so forget hardware card upgrades, just connect and go!
ST 2110-30
SMPTE ST 2110-30 compliance
Native support lets you connect directly to Livewire+ AES67 networks and exchange audio streams.
Native support for RAVENNA, an open technology for stream discovery and advertisement.
Supports AMWA NMOS IS-04 and IS-05 for discovery, registration, and control, and NMOS IS-07 Notifications for ST 2110 AoIP streaming, delivering a new level of interoperability and control with networked equipment throughout the broadcast plant.
Purchase the optional internal Dante card for interoperability with Dante networks using Dante Controller.
Note: Optional at time of purchase
The Ember+ control protocol is supported
Optional Features

Dante
Purchase with an optional Dante card for interoperability with Dante networks.
Note: Optional at time of purchase
HDMI Video Output Support
Your commentary team can receive a live video feed to call a game off-tube, or receive a video feed at the remote site.
Internal Global LTE Modem
The internal global LTE modem (excluding Australia) connects over LTE networks to stream IP audio.
AoIP Streaming
AES67, ST 2110-30, Livewire, RAVENNA and NMOS.
General
- Dimensions: 5 11/16” x 2 15/16” x 7 7/8” 144mm (W) x 75mm (H) x 200mm (D)
- Weight: 1.2 kg (without battery) ???
- Power: Li-ion battery or External 12VDC 3A Power Supply.
- Operating temp: 0°C to 45°C (40°F to 113°F)
- Humidity: 30% ≤RH ≤90% (0 to 40°C/32°F to 104°F), non-condensing
Battery
- Li-ion Jupio ProLine NP-F750 (7.2V 6700mAh | 48.2Wh)
- TBC
- Storage Temp: 1 Month: -20°C - 50°C (-4°F - 122°F); 3 Months -20°C - 40°C (-4°F - 104°F); 1 year: -20°C - 25°C (-4°F - 77°F)
- TBC
- Discharge capacity drops to 80% of initial capacity at ≥ 500 charging/discharging cycles, as per manufacturer’s specifications
audio
- Robust DSP-based architecture designed for rock solid, mission critical broadcast audio
- 2 analog mic/line or digital (AES3) inputs
- AoIP inputs and outputs
- Stereo USB-C digital input/output
- Full duplex Dual Mono or Stereo connections
- Encoding:Tieline Music, Tieline MusicPLUS, Opus, G.711, G.722, MPEG Layer 2, MPEG Layer-3 LC-AAC, HE-AAC, HE-AACv.2, AAC-LD, AAC-ELD, 16/24 bit aptX® Enhanced algorithm. MPEG audio technologies licensed by Frunhofer IIS (http://www.iis.fraunhofer.de/audio)
- Support for RTP, RIST, DHCP, SIP, DNS, HTTP, IGMP, IPv4/IPv6, RTCP, RTSP, STUN, FTP, SNTP, SSL Security Certificate
connectivity
- Dual Ethernet LAN ports (LAN2 is also AoIP port)
- Optional internal global 4G/LTE modem
- Optional support for AES67, ST 2110-30, Livewire+, RAVENNA, Dante, NMOS and Ember +
- USB 2.0 Host Port 1 for cellular modems/tethering cell phones. 1A charging and/or powering modems
- Broadcast quality analog XLR inputs
- SmartStream PLUS dual redundant IP streaming
- Auto failover to backup connection, audio file on SD card, or HTTP stream.
- Fuse-IP data aggregation
- EBU N/ACIP 3326 SIP compliant for interoperability with other codec manufacturers
- Selectable fixed or automatic jitter buffer: 5 automated settings available to manage network connectivity and avoid dropouts
- Configurable Forward Error Correction (FEC)
- Highly advanced error concealment strategies
- Real-time IP connection packet statistics
- Support for Line Hunt dialing/answering and caller IDs using over IP
- Two ¼” (6.35mm) stereo headphone outputs
operation
- 4.3 inch TFT Color LED screen with touch screen
- Smaller Display: 160 x 128 RGB OLED display
- User-friendly HTML5 Toolbox Web-GUI enables codec configuration and control remotely over WANs
- Use the Cloud Codec Controller to configure & manage your entire codec network remotely
- IPv4 & IPv6 compatible and ready
- Upgrade firmware from an SD card
- Backup and restore configuration via SD card
- Automated firmware upgrade notifications via Web-GUI
- Support for multiple languages: English, Spanish, Portuguese and French
- Backward compatible with all Tieline IP codecs
security
- User name and password protection of codec and Toolbox Web-GUI
- Support for SSL Security Certificate installation
- SIP Allow and Block Lists allow filtering of SIP URIs and User Agents
*MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson Licensing.
accessories
- All trademarks mentioned belong to their respective owners and are used for reference only
- Errors and Omissions Excepted
- All information is subject to change without notice.