Techly audioerotin 7.1 LPCM HDMI 4K UHD 3D IDATA HDMI-EA74K

The TECHLY (IDATA) HDMI-EA74K Audio Extractor pulls multichannel audio from an HDMI source and provides it via optical (S/PDIF) or four 3.5 mm analog outputs while passing the HDMI video to a display. The compact unit supports up to 4Kx2K video, 3D, and high-resolution audio formats, making it suitable for home theater and AV installations that require separate audio routing from an HDMI feed.

Advantages

The extractor supports HDMI audio sampling rates up to 192 kHz and S/PDIF optical audio up to 192 kHz, and can deliver LPCM 2/5.1/7.1 and various compressed and lossless bitstream formats (Dolby Digital, DTS, Dolby TrueHD, DTS-HD Master Audio). It allows 4Kx2K resolution and 3D video passthrough, complies with HDMI, HDCP 1.2 and DVI 1.0 standards, supports high-bit-rate (HBR) HDMI audio, and includes EDID management between LPCM 7.1, TV EDID and audio bitstream options. The device is compact (95 × 82 × 23 mm), powered by the included 5V 2A adapter, and certified to EC, FCC and WEEE requirements.

Suitable for

• Home theater systems requiring separate multichannel audio output
• Connecting HDMI video to a TV or projector while sending audio to an AV receiver or external speakers
• Setups needing 7.1 LPCM or bitstream formats from an HDMI source
• Installations where optical S/PDIF or multiple analog outputs are required

Key specifications

• Video bandwidth: 300 MHz / 9 Gbps
• Inputs: 1 × HDMI
• Outputs: 1 × HDMI, 1 × Optical (S/PDIF), 4 × 3.5 mm phone jack (analog multi-channel)
• Supported video: up to 4Kx2K and 3D; HDMI/HDCP 1.2/DVI 1.0 compliant
• HDMI audio sampling rate: up to 192 kHz
• Optical (S/PDIF) sampling rate: up to 192 kHz
• Audio formats: LPCM 2/5.1/7.1, Dolby Digital, DTS, Dolby Digital Plus, Dolby TrueHD, DTS-HD Master Audio
• Analog audio: 7.1 CH via four 3.5 mm outputs
• Power supply: 5 V, 2 A (included)
• Dimensions (W×D×H): 95 × 82 × 23 mm
• Operating temperature: 0 °C to 40 °C; storage: -20 °C to 60 °C
• Certifications: CE, FCC, WEEE

How to use

Connect an HDMI source (Blu‑ray player, game console, set‑top box) to the extractor's HDMI input, then connect the extractor's HDMI output to your TV or projector. For multichannel audio, attach an AV receiver or speaker system to the optical output or to the four 3.5 mm analog outputs according to your speaker configuration. Power the unit with the supplied 5V/2A adapter. Use compatible HDMI cables (recommended lengths up to 15 m at 1080p 8‑bit; up to 10 m for 1080p 12‑bit) and configure the source device audio output and EDID settings as needed.

Recommendations

For reliable operation, use high‑quality HDMI cables, confirm your source device is set to an output format supported by your audio system (LPCM 7.1 or appropriate bitstream), and consult the device EDID options if you experience incompatible audio formats. Ensure adequate ventilation and operate within the specified temperature range.