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2×8 8K 48Gbps HDMI 2.1 Distribution Amplifier with Input Switching & Audio De-Embedding

VLSP-2x88KA

  • Dual HDMI inputs with auto/manual switching to 8 simultaneous HDMI outputs at full 48Gbps

  • Per-output 8K→4K/2K downscaling and HDR-to-SDR conversion for mixed-display environments

  • Audio de-embedding to optical S/PDIF and balanced/unbalanced analog L/R with gain control

  • Full HDCP 2.3 and HDMI 2.1 compliance: 8K@60Hz, 4K@120Hz, HDR10, HDR10+, Dolby Vision, ALLM/VRR

Where to Buy
Where to Buy

Product Description

The VLSP-2x88KA is a professional-grade 2-input, 8-output HDMI 2.1 distribution amplifier delivering full 48Gbps bandwidth across all eight outputs simultaneously. It accepts two HDMI 2.1 sources and distributes the active input to eight displays at resolutions up to 8K@60Hz 4:2:0 12-bit, 8K@30Hz 4:4:4 12-bit, and 4K@120Hz 4:4:4 12-bit, with active signal regeneration ensuring identical signal quality at every output.

Each of the eight HDMI outputs independently supports 8K→4K/2K downscaling and HDR-to-SDR conversion, allowing a single 8K HDR source to simultaneously feed native 8K displays, legacy 4K panels, and 1080p projectors without external processing. ALLM and VRR passthrough are supported for gaming and low-latency display applications. Input switching between the two HDMI sources operates in auto or manual mode, selectable via front panel buttons, IR remote, or RS-232 API commands, with advanced EDID management and a built-in signal generator rounding out the feature set.

Audio de-embedding outputs the active source's audio simultaneously on two paths: a digital optical S/PDIF output (LPCM/Dolby/DTS up to 5.1CH) and a balanced/unbalanced analog L/R output via 5-pin 3.5mm Phoenix connector (LPCM 2CH) with adjustable gain — feeding displays, a room audio system, and a recording path from a single unit. Full HDMI audio passthrough is maintained on all eight HDMI outputs, including Dolby Atmos, Dolby TrueHD, and DTS-HD Master Audio. The unit draws 9.6W from the included 12V/2.5A locking power supply and fits a compact 320 × 100 × 21.5mm footprint with rack-mount ears included.

Key Features

  • HDMI 2.1 compliant — 48Gbps bandwidth, 8K@60Hz 4:2:0 12-bit / 8K@30Hz 4:4:4 12-bit / 4K@120Hz 4:4:4 12-bit

  • HDCP 2.3 compliant; supports HDR10, HDR10+, Dolby Vision, HLG, ALLM/VRR passthrough

  • 2 HDMI inputs with auto and manual input switching — selectable from front panel, IR remote, or RS-232 API

  • 8 HDMI outputs at full 48Gbps — active signal regeneration on every output port

  • Per-output independent 8K→4K/2K downscaling for legacy display compatibility

  • Per-output independent HDR-to-SDR conversion for SDR display compatibility

  • Audio de-embedding to optical S/PDIF (LPCM/Dolby/DTS 5.1CH) and analog L/R (LPCM 2CH) with gain adjustment

  • Supported HDMI audio: LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DTS-EX, DTS-HD Master Audio, DSD

  • Built-in EDID management for reliable source/display handshaking

  • Built-in HDMI signal generator for connection diagnostics

  • Color depth: 8/10/12-bit; color spaces: RGB, YCbCr 4:4:4, 4:2:2, 4:2:0

  • IR wideband receiver input (20K–60KHz) with included 1.5m receiver cable

  • RS-232 API control via 3-pin 3.5mm Phoenix connector

  • USB-C service port for firmware upgrade

  • ESD protection: IEC 61000-4-2 ±8kV air-gap, ±4kV contact discharge

  • Compact form factor: 320 × 100 × 21.5mm; rack-mountable with included ears

  • Power: DC 12V/2.5A — 9.6W max consumption

Downloads

VLSP-2x88KA DATA SHEET (PDF)
VLSP-2x88KA DATA SHEET (PDF)
VLSP-2x88KA USER MANUAL (PDF)
VLSP-2x88KA USER MANUAL (PDF)

Ideal Applications

Large Venue AV & Multi-Screen Presentation

The VLSP-2x88KA is the right choice when a single source must reach eight simultaneous display destinations — main screens, overflow monitors, confidence displays, lobby feeds, and recording inputs — all from one rack unit. Per-output downscaling allows the same 8K or 4K@120Hz source to feed native 8K flagship displays and legacy 1080p overflow monitors in the same signal chain without external scalers. The dual-input auto-switching capability connects a room-installed source and a guest input simultaneously, with seamless failover requiring no operator intervention during live events.

Higher Education — Lecture Halls & Auditoriums

Large university lecture halls and auditoriums routinely require distribution to a projection screen, multiple confidence monitors, an overflow corridor display, ADA-compliant near-screen monitors, and a lecture capture input — often five or more destinations from a single source. The VLSP-2x88KA handles all eight outputs from a single rack unit, downscaling to the appropriate resolution for each destination and extracting audio for the room sound system via the analog L/R de-embed output. The second HDMI input provides a seamless hot-swap between a room PC and a presenting guest's laptop.

Digital Signage & Retail — High-Count Display Arrays

Retail flagships, airport concourses, and large hospitality venues deploying eight or more screens across a single zone benefit from the VLSP-2x88KA's ability to drive every screen simultaneously from one source at the correct resolution for each display tier. Per-output HDR-to-SDR conversion ensures consistent picture quality across a mixed install of HDR-capable and SDR-only commercial displays, while the de-embedded optical audio output feeds the zone background music or announcement system directly from the HDMI signal chain.

Broadcast & Live Production — Multi-Destination Program Distribution

In broadcast control rooms and live event production, a single program feed must reach the director's monitor, talent confidence monitors, technical preview displays, engineering scopes, and remote feed destinations simultaneously. The VLSP-2x88KA distributes to eight destinations at full 48Gbps with per-output format conversion, covering the full range from native 8K monitoring through 1080p technical preview displays. The optical de-embed output provides a clean program audio feed for a separate monitoring path without breaking the video signal chain.

Esports Facilities & High-Frame-Rate Gaming Installations

Esports arenas and gaming facilities require 4K@120Hz content with ALLM and VRR passthrough distributed to competition monitors, spectator screens, caster stations, and streaming capture inputs — often eight or more destinations in a large facility. The VLSP-2x88KA preserves full 48Gbps bandwidth with ALLM/VRR intact on all outputs capable of receiving them, while downscaling to 1080p for capture cards and legacy spectator displays on a per-output basis. Audio de-embedding simultaneously feeds game audio to a streaming production mixer without a separate extractor in the chain.

Specifications

Technical
HDMI ComplianceHDMI 2.1
HDCP ComplianceHDCP 2.3
Video Bandwidth48Gbps
Video ResolutionUp to 8K@60Hz 4:2:0 12-bit; 8K@30Hz 4:4:4 12-bit; 4K@120Hz 4:4:4 12-bit
Color Depth8-bit / 10-bit / 12-bit
Color SpaceRGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0
HDR SupportHDR, HDR10, HDR10+, Dolby Vision, HLG, ALLM/VRR passthrough
HDMI Audio (Input/Output)LPCM, Dolby Digital / Plus / EX, Dolby TrueHD, Dolby Atmos, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DSD
De-Embedded Audio — OpticalUp to LPCM / Dolby / DTS 5.1CH
De-Embedded Audio — Analog L/RLPCM 2CH
Audio Parameters
Output Impedance300 Ohm
Output Level (Maximum)8.2dBu (2Vrms) balanced; 2.2dBu (1Vrms) unbalanced
Frequency Response20Hz – 20kHz (+0.5dB / −1dB)
Audio Output Sync Delay0 – 2.2ms
Audio S/N Ratio99dB @ 2Vrms, 1kHz, A-weighted
Audio THD+N<0.2% @ 0dBV, 1kHz
IR Level12Vp-p
IR FrequencyWideband 20K–60KHz
HDMI Transmission Distance3m / 9.8ft over HDMI cable
ESD ProtectionIEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge)
Connections
HDMI Inputs2× IN [HDMI Type A, 19-pin female]
HDMI Outputs8× OUT [HDMI Type A, 19-pin female]
Digital Audio Output1× OPTICAL [S/PDIF]
Analog Audio Output1× L/R [5-pin 3.5mm Phoenix connector]
Control1× RS-232 [3-pin 3.5mm Phoenix connector]; 1× IR CTL [3.5mm stereo mini-jack]; 1× SERVICE [USB Type-C, firmware upgrade]
Mechanical
HousingMetal Enclosure
ColorBlack
Dimensions320mm (W) × 100mm (D) × 21.5mm (H)
Weight810g
Power SupplyDC 12V / 2.5A (Multinational Locking, included)
Power Consumption9.6W (Max)
Operating Temperature0°C – 40°C / 32°F – 104°F
Storage Temperature−20°C – 60°C / −4°F – 140°F
Operating Humidity20% – 80% relative humidity, non-condensing
Storage Humidity10% – 90% relative humidity, non-condensing

What’s in the Box

  • 1× VLSP-2×88KA 2×8 8K 48Gbps HDMI 2.1 Distribution Amplifier

  • 1× IR Remote

  • 1× 3-pin 3.5mm Phoenix Connector (RS-232)

  • 1× 5-pin 3.5mm Phoenix Connector (Analog Audio L/R)

  • 1× IR Wideband Receiver (1.5m)

  • 1× 12V/2.5A Multinational Locking Power Supply

  • 2× Mounting Ears

  • 4× Machine Screws (KM3×6)

  • 1× User Manual

Frequently Asked Questions

What resolutions does the VLSP-2x88KA support on its HDMI outputs?

The VLSP-2x88KA supports all HDMI 2.1 resolutions at full 48Gbps bandwidth: up to 8K@60Hz 4:2:0 12-bit, 8K@30Hz 4:4:4 12-bit, and 4K@120Hz 4:4:4 12-bit on each of its eight outputs. When per-output downscaling is enabled, individual outputs can be independently reduced to 4K or 2K for compatibility with legacy displays without affecting the other outputs.

Can each output be set to a different resolution or HDR format independently?

Yes. Each of the eight HDMI outputs can independently downscale from 8K to 4K or 2K, and independently convert HDR to SDR. This allows a single 8K HDR source to simultaneously drive a native 8K display, 4K HDR panels, 4K SDR monitors, and 1080p projectors — all from the same unit with no external scalers required.

How does input switching work between the two HDMI inputs?

The VLSP-2x88KA supports both auto-switching and manual input selection. In auto mode, the unit detects which input has an active HDMI signal and routes it to all eight outputs automatically — switching to the other input if the active source disconnects. Manual switching is available via the front panel buttons, included IR remote, or RS-232 API commands.

What audio outputs does the VLSP-2x88KA provide?

The unit de-embeds audio from the active HDMI input and outputs it on two separate paths simultaneously: an optical S/PDIF output supporting LPCM, Dolby, and DTS up to 5.1 channels, and a balanced/unbalanced analog L/R output via a 5-pin 3.5mm Phoenix connector carrying LPCM 2-channel audio with adjustable gain. Full HDMI audio passthrough — including Dolby Atmos, Dolby TrueHD, and DTS-HD Master Audio — is maintained on all eight HDMI outputs.

Does the VLSP-2x88KA support ALLM and VRR passthrough?

Yes. The VLSP-2x88KA supports ALLM (Auto Low Latency Mode) and VRR (Variable Refresh Rate) passthrough, ensuring gaming consoles such as PlayStation 5 and Xbox Series X can negotiate low-latency and adaptive refresh modes with compatible displays. These features pass through on all outputs that support them, making it suitable for multi-monitor gaming and esports installations.

Does the VLSP-2x88KA support HDCP 2.3 on all outputs?

Yes. The unit is fully HDCP 2.3 compliant across all eight HDMI outputs, enabling distribution of protected 4K and 8K content. Each output manages its own HDCP handshake independently, so a non-HDCP display on one output does not affect HDCP operation on the remaining outputs.

What control interfaces does the VLSP-2x88KA support?

The VLSP-2x88KA supports front panel buttons, an IR remote with included wideband IR receiver (20K–60KHz, 1.5m cable), and RS-232 API commands via a 3-pin 3.5mm Phoenix connector for integration with VigilLynx™ or third-party control systems including Crestron, AMX, and Extron. A USB-C service port is provided for firmware upgrades.

How does the VLSP-2x88KA compare to the VLSP-2x48KA?

Both models are 2-input HDMI 2.1 distribution amplifiers with identical resolution support, per-output downscaling, HDR-to-SDR conversion, audio de-embedding, and RS-232 control. The key difference is output count: the VLSP-2x48KA provides four HDMI outputs in a 220×110mm footprint drawing 6.24W, while the VLSP-2x88KA provides eight HDMI outputs in a 320×100mm footprint drawing 9.6W. The VLSP-2x88KA additionally lists ALLM/VRR passthrough. Choose the VLSP-2x48KA for smaller installations; choose the VLSP-2x88KA when eight simultaneous display destinations are required.

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