8K 48Gbps HDMI 2.1 Distribution Amplifiers
About 8K HDMI 2.1 Distribution Amplifiers
VigilLink's HDMI 2.1 distribution amplifier family delivers the full 48Gbps bandwidth required for 8K@60Hz, 4K@120Hz 4:4:4, VRR, ALLM, and Dolby Vision passthrough — capabilities that HDMI 2.0 amplifiers cannot support. Designed for professional AV installations where next-generation gaming consoles, 8K broadcast monitors, and high-frame-rate display systems demand uncompromised signal integrity at every output, the VLSP-series HDMI 2.1 range is available in 1x2, 1x4, and 1x8 single-input configurations, with SA variants adding audio de-embedding; the VLSP-22H21 offering 2x2 dual-input A/B switching; and the VLSP-2x48KA (2x4) and VLSP-2x88KA (2x8) offering dual-input switching with per-output downscaling, HDR-to-SDR conversion, audio de-embedding, and RS-232 control in a single unit. Every model ships with a 6-year VigilLink warranty.
Choosing the Right HDMI 2.1 Distribution Amplifier
Standard HDMI 2.1 — Video Only (VLSP-12H21S / VLSP-14H21S / VLSP-18H21S): Full 48Gbps distribution with no audio extraction. The VLSP-12H21S (1x2) suits smaller dual-monitor setups; the VLSP-14H21S (1x4) covers four-display environments; the VLSP-18H21S (1x8) handles large-scale 8K or 4K@120Hz arrays.
With Dual-Input Switching, Per-Output Scaling & Audio De-Embedding (VLSP-2x48KA / VLSP-2x88KA): Two HDMI 2.1 inputs with auto and manual switching distribute the active source to 4 outputs (VLSP-2x48KA) or 8 outputs (VLSP-2x88KA) simultaneously. Each output independently supports 8K→4K/2K downscaling and HDR-to-SDR conversion, allowing a single source to simultaneously feed mixed-resolution display environments without external scalers. Audio de-embedding to optical S/PDIF and analog L/R is included, and RS-232 API control enables integration with third-party control systems. Choose a 2xKA model when dual-input switching, mixed-resolution outputs, and integrated audio de-embedding are all required from a single rack unit.
With Audio De-Embedding (VLSP-12H21SA / VLSP-14H21SA): Identical video distribution to the standard models, with the addition of simultaneous analog stereo, optical TOSLINK, and coaxial S/PDIF audio extraction from the HDMI signal. Choose an SA model when the source must simultaneously feed displays and a separate audio system — room amplifier, streaming audio mixer, or broadcast desk — that does not have an HDMI input.
Frequently Asked Questions
What bandwidth does HDMI 2.1 provide and why does it matter for distribution?
HDMI 2.1 supports up to 48Gbps FRL bandwidth, compared to 18Gbps on HDMI 2.0. This additional bandwidth is required to carry 8K@60Hz, 4K@120Hz 4:4:4, VRR, and ALLM signals intact. A distribution amplifier must match the source bandwidth — using an HDMI 2.0 amplifier with an HDMI 2.1 source caps all outputs at 4K@60Hz and disables high-frame-rate and VRR features.
Are VigilLink HDMI 2.1 distribution amplifiers backward compatible with HDMI 2.0 sources and displays?
Yes. All VLSP-series HDMI 2.1 models are fully backward compatible with HDMI 2.0, HDMI 1.4, and earlier sources and displays. The amplifier negotiates the highest common signal format between source and display at each output independently, so mixing HDMI 2.0 and HDMI 2.1 displays on the same unit is supported.
Do these amplifiers support VRR and ALLM for gaming?
Yes. All VigilLink HDMI 2.1 distribution amplifiers pass VRR and ALLM signals transparently to all outputs, preserving adaptive sync and low-latency game mode on compatible displays. Both features require a VRR/ALLM-compatible display at each output to take effect.
What is the difference between the VLSP-12H21SA and VLSP-12H21S?
Both are 1x2 HDMI 2.1 distribution amplifiers with identical 48Gbps video distribution. The VLSP-12H21SA adds integrated audio de-embedding, extracting the HDMI audio stream as simultaneous analog stereo (L/R), optical TOSLINK, and coaxial S/PDIF outputs. Choose the VLSP-12H21SA when the source must also feed a room audio system or amplifier without an HDMI input.