Blackmagic Design ATEM 2 M/E Constellation 4K
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- This item is covered for 3 years
What you need to know
What you need to know
- 20 12G?SDI inputs with standards and frame rate conversion on all inputs for a flexible Ultra HD workflow.
- 12 routable 12G?SDI outputs, 2 UHD multiviews, USB?C webcam output for immediate streaming.
- Powerful graphics with 8 chroma keyers, 2 DVEs and SuperSource for a total of 6 DVEs.
- 48-channel Fairlight professional audio with built-in EQ and dynamics for broadcast mixing.
Manufacturer Information
Blackmagic Design
https://www.blackmagicdesign.com
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A benchmark 2 M/E in the Constellation range
Designed for modern control rooms, the ATEM 2 M/E Constellation 4K combines 12G-SDI connectivity and advanced graphics power in a 1U chassis. It sits at the heart of the ATEM range, driving high-bandwidth Ultra HD productions with ultra-low latency.
Which studios and productions is it designed for?
Perfect for TV studios, esports, corporate events and in-venue multicamera production, it is ideal for any control room looking for a robust 12G-SDI switcher, ready for 2160p60 and compatible with extensive camera fleets.
Technical specifications
| Category | mixer | Inputs | 20x SDI, Ref in SDI, 2x Jack 6,35 |
| Video format | 2160p | Weight | 2.97 kg |
| Number of screens | 1.0000 | Dimensions (mm) | 482 x 234 x 44 |
| Outputs | 12x SDI, SDI Multiview | ||
| Total number of video inputs | 20 | Transition keyers | 2 Stinger, 2 DVE |
| Total number of video outputs | 12 | Total number of layers | 15 |
| SDI data rates | 1.5G, 3G, 6G, 12G | Pattern generators | 11 |
| Audio inputs | 2 x 1/4-inch balanced jack; 1 x 5-pin XLR talkback | Color generators | 2 |
| Audio outputs | 1 x 5-pin XLR talkback | Control panel | Emergency switching on the front panel, software or optional hardware panel |
| SDI audio inputs | 8 channels of embedded audio on all SDI inputs | Routable windows | 32 |
| SDI audio outputs | 16 channels of embedded audio on all SDI outputs | Tally | Red for program, green for preview |
| Timecode connections | None | Multi View monitoring | 2 x configurable multi views with 16, 13, 10, 7 or 4 views; monitoring of the program, preview, inputs, media players, key masks and clean feed with labels and optional audio meters |
| Video input synchronization | On all 20 inputs | Multi View video standard | HD or Ultra HD |
| Frame rate and format converters | On all 20 inputs | Media players | 2 (fill and key channels for each player) |
| SDI AUX outputs | Any of the 12 SDI outputs | Still image library capacity | 40 |
| SDI preview outputs | Any of the 12 SDI outputs | Clip library capacity | 2 x up to 2160p60 |
| Down-converted SDI program output | 1 | Maximum clip length in HD 720 | 3200 frames |
| Webcam output | 1 x USB-C supporting 720p or 1080p at the PGM frame rate | Maximum clip length in HD 1080 | 1600 frames |
| Number of multi views | 2 x 12G-SDI | Clip length in UHD 2160 | 400 frames |
| Control panel connection | Ethernet (direct connection or via a network) | Still image formats | PNG, TGA, BMP, GIF, JPEG, TIFF |
| Talkback | RJ45 for third-party systems | Video file format | TGA sequence |
| Ethernet | 10/100/1000 BASE-T | Audio formats | WAV, MP3, AIFF |
| Computer interface | 1 x USB-C (USB 2.0) | Processing delay | Less than 10 lines |
| SD video standards | None | Audio mixer | 48 channels; On/Off/Audio-Follow-Video modes; level and peak metering; master gain; 6-band parametric equalizer; expander, gate, compressor and limiter dynamics |
| HD video standards | 720p50, 720p59.94, 720p60; 1080i50, 1080i59.94, 1080i60; 1080p23.98, 1080p24, 1080p25, 1080p29.97, 1080p30, 1080p50, 1080p59.94, 1080p60 | Down-conversion | 1 x selectable down-converted HD output |
| Ultra HD video standards | 2160p23.98, 2160p24, 2160p25, 2160p29.97, 2160p30, 2160p50, 2160p59.94, 2160p60 | Included control panel | ATEM Software Control (Mac 13.0 Ventura, Mac 14.0 Sonoma or later; Windows 10 or 11) |
| SDI standards compliance | SMPTE 292M, SMPTE 296M, SMPTE 424M, SMPTE 425M level A and B, SMPTE 2081-1, SMPTE 2081-10, SMPTE 2082-1, SMPTE 2082-10 | Software updates | Via USB or Ethernet (ATEM Setup utility included) |
| Video sampling | 4:2:2 | Configuration | Via ATEM Software Control Panel; chassis IP address via ATEM Setup Utility over USB |
| Color precision | 10-bit | Operating systems | Mac 14.0 Sonoma, Mac 15.0 Sequoia or later; Windows 10 and 11 |
| Color space | REC 709, REC 2020 | Power supply | 1 x internal 100-240V AC |
| Automatic SDI switching | Automatic detection of 1.5G-SDI, 3G-SDI level A/B, 6G-SDI, 12G-SDI | Power consumption | 140 W |
| Upstream keyers | 8 | Physical installation | 1 rack unit |
| Downstream keyers | 2 | Operating temperature | 0 to 40°C (32 to 104°F) |
| Advanced chroma keyers | 8 | Storage temperature | -20 to 60°C (-4 to 140°F) |
| SuperSource | 1 | Relative humidity | 0% to 90% non-condensing |
| DVEs | 2 | Included | ATEM 2 M/E Constellation 4K; welcome pack with QR code for software download |
| Linear/luma keyers | 11 | ||
Questions frequently asked
Does the ATEM 2 M/E Constellation 4K support 4K cameras at 60 fps?
The 20 12G-SDI inputs support signals up to 2160p60, with format and frame rate conversion on each input.
How many SDI cameras can be connected to this switcher?
This model features 20 SDI inputs and 12 routable SDI outputs. Auto-detection covers rates of 1.5G, 3G, 6G, and 12G-SDI.
Is audio mixing integrated for live concert?
The built-in Fairlight mixer handles 48 audio channels. Each SDI input carries 8 embedded audio channels, while each SDI output can transmit 16 channels. The 6-band parametric EQ and dynamics processing include expander, gate, compressor, and limiter.
How to monitor all sources during a shoot?
Two configurable 12G-SDI multiview outputs display up to 16 views, including program, preview, inputs, and audio meters.
Can the program be sent to streaming software via USB?
The USB-C webcam output provides a 720p or 1080p feed at the program frame rate.



