Reference
4K HDMI ARC Audio Decoder with Dolby & DTS Downmix
Extract ARC Audio from Any HDMI-Enabled TV — Dolby 5.1 & DTS 5.1 Downmix to Analog Stereo
AUD-DCODEARC-4KUPC 813982023918
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Overview
Extracts audio from any ARC-enabled HDMI TV and downmixes Dolby 5.1, DTS 5.1, or PCM 2.0 to 2-channel analog stereo via dual outputs (RCA and 3.5mm). CEC support enables TV remote volume control for seamless operation.
Designed for home theaters, hospitality installs, and conference rooms, the AUD-DCODEARC-4K bridges the gap between modern ARC-only TVs and legacy analog audio equipment — powered entirely via USB with no external adapter required.
Key features
- HDMI ARC audio extraction from any ARC-enabled TV to analog stereo output
- Licensed Dolby Digital 5.1 and DTS 5.1 decoding with downmix to 2-channel stereo
- PCM 2.0 stereo pass-through for standard audio sources
- Dual analog outputs: 3.5mm stereo jack and RCA L/R for flexible connectivity
- CEC volume control — adjust volume using the TV remote
- USB-powered (5V/500mA) — can run from TV USB port with no wall adapter
- Front-panel LED indicators for power, ARC link, and audio format (PCM/Dolby/DTS)
- Compact aluminum enclosure (70x65x27mm, 80g) for discreet installation behind displays
- ESD protection: +/-8kV air-gap, +/-4kV contact discharge
| Specification | Value |
|---|---|
| Technical | |
| HDMI Compliance | HDMI 1.3 or above |
| HDMI Audio Formats | PCM 2.0, Dolby 5.1, DTS 5.1 |
| L/R Audio Format | Analog Stereo 2CH |
| Vmax | 2 Vrms |
| SNR | >90 dB |
| THD+N | <0.1% (Vmax); 0.001%-0.01% (Vbest) |
| Crosstalk | >80 dB |
| Frequency Response | 20 Hz - 20 kHz +/-1 dB |
| ESD Protection | +/-8kV (air-gap) / +/-4kV (contact) |
| Connection | |
| Input | 1x HDMI Type A [19-pin female] (ARC IN), 1x Micro USB (power) |
| Output | 1x 3.5mm Stereo Jack, 2x RCA L/R |
| Mechanical | |
| Housing | Aluminum Enclosure, Silver |
| Dimensions | 70mm (W) x 65mm (D) x 27mm (H) |
| Weight | 80g |
| Power Supply | USB 5V/500mA |
| Power Consumption | 0.86W (Max) |
| Environmental | |
| Operating Temperature | 0C - 40C (32F - 104F) |
| Storage Temperature | -20C - 60C (-4F - 140F) |
| Relative Humidity | 20-90% RH (no condensation) |
| Package Contents | |
| 1x | HDMI ARC Audio Down-Mixer |
| 1x | USB Cable (USB-A to Micro USB) |
| 1x | User Manual |
Does this support eARC?
No, ARC only. For eARC support with Dolby Atmos and DTS:X, use the KanexPro AUD-DEBEDEARC-4K.
What audio formats are decoded?
PCM 2.0, Dolby Digital 5.1, and DTS 5.1 are decoded and downmixed to 2-channel analog stereo.
Can I connect this to an amplifier?
Yes. Use the RCA L/R outputs to connect to any amplifier, powered speaker, or AV receiver with analog inputs.
Can I use headphones with this device?
Yes. The 3.5mm stereo jack output connects directly to headphones or a headphone amplifier.
How do I power the unit?
Connect the included USB cable to any USB 5V source - the TV USB port, a USB wall adapter, or a USB power bank.
Can I use the TV remote to control volume?
Yes. CEC pass-through allows the TV remote to control the analog output volume level.
No audio output from the device?
Verify ARC is enabled in the TV settings (usually under Sound > Audio Output). Ensure the HDMI cable is connected to the TV ARC-designated HDMI port. Check that the USB power cable is connected and the PWR LED is lit.
How do I know which audio format is being decoded?
The front-panel Audio Decoding LED indicates: solid red = PCM or no signal, blinking red = Dolby decoding, blinking green = DTS decoding.
What is the upsell path for customers needing more features?
Recommend the AUD-DEBEDEARC-4K for eARC, Dolby Atmos, DTS:X, optical output, and 4K60 HDMI passthrough.
What verticals is this product best suited for?
Residential AV retrofits, hospitality TV audio, corporate huddle rooms, and assistive listening stations in healthcare or public spaces.
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