4K@120Hz HDMI 2.1 eARC Audio Extractor D-olby A-tmos Vision VRR ALLM HDR10 CEC Bypass HDCP2.3 SPDIF Plug & Play for Soundbars/Sono-s ARC/eARC/PS5/Xbox

【True HDMI2.1 40Gbps Video Pass‑Through for Gaming & Home Theater】Full HDMI2.1 40Gbps bandwidth, supports **4K@120Hz 4:4:4 8‑bit**, VRR, ALLM, Dolby Vision, HDR, HDCP2.3, 3D and deep‑color 30/36‑bit. Built‑in HDMI signal re‑timing chip reduces signal degradation. Recommend certified HDMI2.1 cables within 3 meters. *Note: This model CANNOT output audio from TV built‑in apps, only extracts audio from HDMI source devices.* 【eARC / ARC & SPDIF Optical Multi‑Audio Output】Dedicated eARC/ARC HDMI port for lossless Dolby Atmos 7.1CH audio for eARC soundbar like SONOS ARC. SPDIF optical port outputs max 5.1‑channel audio. **Important: SPDIF will be inactive under Dolby Atmos mode; Atmos and SPDIF cannot work simultaneously.** Pass‑through DTS‑X, LPCM7.1, DSD lossless audio. 【EDID Dip‑Switch Solve No‑Sound & Handshake Errors】Three hardware dip‑switch modes: `FIXED 4K7.1 / SPDIF5.1 / ATMOS`. FIXED 4K7.1 forces 4K@120Hz with Atmos 7.1CH. SPDIF5.1 copies TV EDID for 5.1‑channel optical output. ATMOS copies TV EDID for Atmos 7.1CH output. Quickly fix black‑screen, audio format mismatch issues. Plug‑and‑play, no driver required. 【CEC Pass‑Through & Type‑C for Power and Firmware Update】HDMI OUT(TV) supports CEC pass‑through. Powered by Type‑C DC5V (1A‑3A). Can draw power from phone charger. Type‑C port supports official firmware upgrade to improve compatibility. Compact dimension:58×52.8×22 mm, weight 80g. 【ATTENTION】HDMI 2.1 Cabler less than 3m, if you play 4K120 signal. When play PCM2.1 CH, SPDIF & 3.5mm audio port work together, When 5.1ch available, only SPDIF works. When you play 7.1CH/Atmos, It just stream out from HDMI OUT. Do NOT support ATMOS 7.1 on SPDIF. It is not audio down mixer.