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AJA 12G-AMA-R-ST 4-Channel 12G-SDI Balanced Analog Audio Embedder/Disembedder / ST Fiber Receiver / 4K UltraHD

SKU: 12G-AMA-R-ST
Brand: AJA
$1,835.00
Brand AJA
SKU 12G-AMA-R-ST
Weight 1.00 lbs
Warranty 3 Years
Condition New
Status Available
Expert

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Description

The 12G-AMA-R-ST is a compact 12G-SDI mini-converter that embeds and disembeds balanced analog audio for SDI signals up to 4K/UltraHD. It integrates a single ST fiber receiver SFP to extend 4K signals over long distances while maintaining full 12G-SDI support. The unit automatically detects and configures the input video standard for seamless operation.

The converter provides four balanced analog channels for embedding and disembedding audio, available as four analog outputs at all times. Embedding is user selectable on a channel pair basis, allowing either pass-through of incoming embedded audio or override with the analog inputs. Analog audio levels are configurable via Mini-Config for professional and consumer reference levels.

Video performance includes single link support for SD, HD, 2K, UltraHD and 4K formats at standard frame rates and color depths up to 10-bit 4:4:4 or 4:2:2. Embedded audio support follows SMPTE standards with up to 16 channels supported and professional grade 24-bit digital audio converters. Measured audio latency is low with typical embed and disembed paths on the order of 1100 to 1200 microseconds.

Connectivity consists of 1x 12G-SDI BNC input, 1x 12G-SDI BNC output, and 1x 12G-SDI Fiber ST receiver input for singlemode links. A 25-pin D female connector on the converter provides balanced analog I/O and the supplied breakout cable breaks these out to four XLR female inputs and four XLR male outputs. A USB port provides access to AJA Mini-Config for format and level configuration while an external DIP switch offers basic local control.

This mini-converter fits in constrained installations such as camera rigs, behind monitors, or in compact racks where space is limited. Typical applications include broadcast studios, OB trucks, master control rooms, and live event systems that require analog audio integration with SDI infrastructures. The included universal power supply and optional P-TAP support make battery or mains operation straightforward in the field.

Built for reliability the 12G-AMA-R-ST ships with a universal external power supply and a locking power connector to avoid accidental disconnects. The small form factor and rugged construction support a wide variety of installation locations and workflows. A five year warranty from the manufacturer provides long-term support and firmware updates via AJA Mini-Config.

Specifications

Video Formats4096x2160p 23.98/24/25/29.97/30/50/59.94/60, 3840x2160p 23.98/24/25/29.97/30/50/59.94/60, 2048x1080p 50/59.94/60, 1920x1080p 23.98/24/25/29.97/30/50/59.94/60, 1920x1080i 50/59.94/60, 1280x720p 50/59.94/60 Level A Only, 625i 50, 525i 59.94, RGB YCbCr 4:4:4/4:2:2 10-bit
Video Input Digital1x 12G-SDI BNC, SMPTE 259/292/424/2081/2082, Single Link SD/HD/2K/UltraHD/4K, 3G-SDI Level A B-DL B-DS SMPTE 425
Fiber Input1x 12G-SDI Fiber ST, SMPTE 297/259/292/424/2081/2082, Rx wavelength 1260 nm-1620 nm, Optical sensitivity -10 dBm@12Gbps -14 dBm@3Gbps, Overload -2 dBm
Video Output Digital1x 12G-SDI BNC, SMPTE 259/292/424/2081/2082, Single Link SD/HD/2K/UltraHD/4K, 3G-SDI Level A B-DL B-DS SMPTE 425
Cable EqualizationBelden 1694A coax, 12 Gbps 65m, 6 Gbps 125m, 3 Gbps 190m, 1.5 Gbps 200m, 270 Mbps 405m
Audio Inputs and OutputsBalanced analog, 1x 25-pin D female, 4-ch in, 4-ch out, breakout cable 1x 25-pin D male, 4x XLR female inputs, 4x XLR male outputs
Digital Audio Converters24-bit
Embedded AudioSMPTE 272M SD 20-bit 48 kHz, SMPTE 299M 24-bit 48 kHz, pass/remove/override, up to 16 channels, 2048x1080p/PsF 29.97/30 max 8 channels
Audio LatencyEmbed path 1100 microsec, Disembed path 1200 microsec
Analog Audio LevelsPro1 0 dBfs=+24 dBu, Pro2 0 dBfs=+18 dBu, Pro3 0 dBfs=+15 dBu, Consumer1 0 dBfs=+12 dBu
User InterfaceExternal DIP switch, USB Mini-Config
Size (w x d x h)5.8" x 3.1" x 1.0", 147.32 x 78.74 x 25.4 mm
Weight0.6 lb, 0.3 kg
Power+5-16 VDC, 10 W, power supply included
EnvironmentOperating temp 0 to 40 C, Storage temp -40 to 60 C, Humidity 10-90% noncondensing, Altitude <3000 m
Supplied Fiber SFP ReceiverSingle channel ST SFP receiver
Breakout Cable Supplied25-pin D to 4x XLR in 4x XLR out
WarrantyFive year

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  • Purchase order: Fax purchase orders to 1.916.672.2557

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Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.

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Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.

Exchanges:

If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.

No Returns/Exchanges on the following:

  • TVs and monitors 20" and larger
  • Special Order merchandise
  • Any item indicated on the website as non-returnable

For more information see our official Return Policy

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