Description
ST-NMC03 HDMI eARC Audio Adapter is a professional 48Gbps HDMI 2.1 audio adapter designed to extract and de-embed high-quality audio from HDMI and eARC sources for soundbars, AV receivers, and home theater systems. The ST-NMC03 HDMI eARC Audio Adapter supports HDMI 2.1, HDCP 2.3, Dolby Atmos, DTS:X, HDR10+, Dolby Vision, and 8K video pass-through, delivering exceptional audio and video performance for modern entertainment systems.
Features
☆ HDMI 2.1 and HDCP 2.3 compliant
☆ Support 48Gbps FRL and 18Gbps TMDS video bandwidth
☆ Support video resolution up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit
☆ HDMI 2.1 protocols: VRR, ALLM, QMS, QFT, SBTM are supported
☆ HDR, HDR 10, HDR 10+, Dolby Vision, HLG pass-through
☆ LPCM 7.1CH, Dolby TrueHD, Atmos and DTS-HD Master, DTS:X Audio pass-through
☆ HDMI input audio or TV eARC audio de-embedded to any Soundbar
☆ Full audio up to Dolby Atmos/DTS:X from eARC TV to SONOS ARC & Beam or any eARC Soundbar
☆ Support CEC control from TV to the source and Soundbar
☆ Support CEC volume control from TV to any sound system
☆ Advanced EDID management
Package Contents
① 1x 48Gbps HDMI eARC Audio to Soundbar Adapter
② 1x 5V/1A Multinational Power Supply
③ 1x User Manual
Specifications
| Technical | |
| HDMI Compliance | HDMI 2.1 |
| HDCP Compliance | HDCP 2.3 |
| Video Bandwidth | 48Gbps FRL and 18Gbps TMDS |
| Video Resolution | Up to 8K@60Hz 4:2:0 12bit, 4K@120Hz 4:4:4 12bit |
| Color Space | RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| Color Depth | 8/10/12bit |
| HDR | HDR, HDR10, HDR10+, Dolby Vision, HLG |
| Audio Formats | HDMI IN/OUT: LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DSD, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DTS:X eARC AUDIO OUT: LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DSD, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DTS:X |
| Video Latency | No Latency |
| Audio Latency | No Latency |
| HDMI Cable Length | 8K60: 2m/6.6ft ~ 3m/10ft (Ultra HDMI 2.1 cable recommended) 4K60: 5m/16ft 4K30: 10m/33ft 1080P: 15m/49ft |
| ESD Protection | IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge) |
| Connection | |
| Input | 1x Source IN [HDMI Type A, 19-pin female] |
| Output | 1x TV(eARC) OUT [HDMI Type A, 19-pin female] 1x Soundbar eARC OUT [HDMI Type A, 19-pin female] |
| Control | 1x SERVICE [USB Type C, firmware update port] |
| Mechanical | |
| Housing | Metal Enclosure |
| Color | Black |
| Dimensions | 95mm [W] × 68mm [D] × 18mm [H] |
| Weight | 178g |
| Power Supply | Input: AC 100–240V 50/60Hz, Output: DC 5V/1A (US/EU standards, CE/FCC/UL certified) |
| Power Consumption (Max) | 4.13W |
| Operating Temperature | 0°C ~ 40°C / 32°F ~ 104°F |
| Storage Temperature | -20°C ~ 60°C / -4°F ~ 140°F |
| Operating Humidity | 20% ~ 90% RH (non-condensing) |
Operation Controls and Functions
Front Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED | When the device is powered on, the red LED will be on. |
| 2 | IN LED | When the input signal is detected, the green LED will be on. |
| 3 | OUT LED | When the OUT port connects to a TV, the green LED will be on. |
| 4 | Soundbar eARC LED | When the eARC OUT port connects to a soundbar, the green LED will be on. |
| 5 | eARC LED | On: The ARC/eARC function is turned on. CEC communication and ARC/eARC is working properly. Flashing: The ARC/eARC function is turned on. CEC communication and ARC/eARC is not working properly. Off: The ARC/eARC function is turned off. |
| 6 | eARC Button | Press this button to enable or disable the eARC function. |
| 7 | EDID DIP Switch | Use the DIP switch to set EDID: [DIP]=111: Copy OUT port sink video and audio EDID [DIP]=110: Copy OUT port sink video EDID, Audio 7.1CH [DIP]=101: FRL12G_8K_HDR, 2.0CH [DIP]=100: FRL12G_8K_HDR, 5.1CH [DIP]=011: FRL12G_8K_HDR, 7.1CH [DIP]=010: FRL10G_8K_HDR, 2.0CH [DIP]=001: FRL10G_8K_HDR, 5.1CH [DIP]=000: FRL10G_8K_HDR, 7.1CH |
| 8 | SERVICE Port | Firmware update and debug port. |
Rear Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Source IN Port | HDMI signal input port, connected to an HDMI source device such as DVD, PS5 or 8K computer host with an HDMI cable. |
| 2 | TV(eARC) OUT Port | HDMI signal output port, connected to TV (ARC/eARC) with an HDMI cable. It can be used as an ARC/eARC audio channel when the ARC function is enabled. |
| 3 | Soundbar eARC OUT Port | HDMI audio output port, connected to a soundbar with an HDMI cable. |
| 4 | DC 5V | DC 5V/1A power input port. |
Application Example
The ST-NMC03 HDMI eARC Audio Adapter provides reliable HDMI audio extraction with advanced EDID management, CEC control, and full eARC compatibility. Designed for home theaters, commercial AV installations, gaming systems, and professional audio applications, the ST-NMC03 HDMI eARC Audio Adapter ensures stable performance, premium sound quality, and seamless integration with modern HDMI 2.1 devices.
The ST-NMC03 HDMI eARC Audio Adapter is an excellent solution for users who need high-quality HDMI audio extraction while maintaining full 8K video pass-through. Whether connecting a TV, gaming console, Blu-ray player, AV receiver, or soundbar, the ST-NMC03 HDMI eARC Audio Adapter delivers reliable audio performance with Dolby Atmos, DTS:X, and HDMI eARC support. With advanced EDID management, CEC control, and HDMI 2.1 compatibility, the ST-NMC03 HDMI eARC Audio Adapter is ideal for home theaters, professional AV systems, entertainment venues, and commercial installations.