Can a $20 HDMI Cable Handle True 4K120? We Put GeoHN.G's AP-H21 AOC 2.1 Cable to the Test!

Manufacturer & Model
GeoHN.G AP-H21 HDMI 2.1 Fiber Optic Cable
MSRP
Varies by length – approx. $18 (3.3ft) to $40 (15ft)
Link
https://amzn.to/44IvocE
Highlights
48Gbps HDMI 2.1 Active Optical Cable (AOC), Supports 8K@60Hz, 4K@120Hz/144Hz, Dolby Vision & Dynamic HDR, Full support for Dolby Atmos, DTS:X, HDCP 2.2/2.3, and eARC, Built for gaming: VRR, ALLM, QFT, QMS compatibility, Flexible fiber optic construction with aluminum alloy shell, Rated for 30,000+ bends
Summary
GeoHN.G's AP-H21 HDMI 2.1 cable made its way onto the HDMI TEST BENCH, where both a 3.3-foot and 15-foot sample were tested using high-bandwidth signal generators. With support for full 48Gbps transmission, including 4K120 and 8K60 formats, the cables proved capable of maintaining rock-solid connections across various test conditions. Murideo’s STIX Generator confirmed stable performance even at maximum signal demands.
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On the latest HDMI TEST BENCH, a Chinese manufacturer called GeoHN.G finds two lengths of its AP-H21 HDMI 2.1 Fiber Optic Cable on the bench. GeoHN.G provided the samples, sending 3.3-foot and 15-foot versions, both promising 48Gbps performance. The review includes physical measurements and evaluation, in addition to tests with Murideo's 8K Fox and Hound Test Kit and 48Gbps STIX Generator, testing its ability to establish 5 volts, while also providing stable connections for 8K 60 and 4K 120 connections. These tests encompass both 40Gbps and 48Gbps configurations.

Did the samples receive our stamp of approval? Click on the video review below and find out!


GeoHN.G's AP-H21 HDMI 2.1 Fiber Optic Cable Specifications:
  • Cable Type: 8K HDMI 2.1 Active Optical Cable (AOC)
  • Bandwidth: 48Gbps
  • Supported Resolutions: 8K@60Hz, 4K@120Hz/144Hz
  • HDR Support: Dynamic HDR, Dolby Vision
  • Audio Formats: Dolby Atmos, DTS:X, DTS-HD
  • Gaming Features: VRR (Variable Refresh Rate), ALLM (Auto Low Latency Mode), QMS (Quick Media Switching), QFT (Quick Frame Transport)
  • HDCP Support: HDCP 2.2 & 2.3
  • Additional Features: eARC, CEC, Anti-EMI
  • Construction: Flexible fiber optic cable, alloy shell, durable sheath (30,000+ bend lifespan)
  • Compatible Devices: PC, Laptop, PS5, Xbox Series X/S, Nintendo Switch, Blu-ray Players, AV Receivers, Projectors, Streaming Devices, QLED/OLED TVs (Samsung, Sony, LG), Fire TV, Roku TV
  • Applications: Home theater, gaming setups, conference rooms, medical imaging
Links to Purchase the GeoHN.G 48Gbps HDMI 2.1 Cable from Amazon:
Links to Buy Murideo and AV Pro Equipment:

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