Monoprice

Monoprice 139666 Blackbird 4K HDMI 4x1 Switch with Audio Extractor

4.8 (7 reviews)
4K

Connect four 4K HDMI sources to one display with audio extraction, HDR support, and IR control.

$65.02*$76.49Save 14%
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Monoprice Blackbird 4K HDMI 4x1 Switch (Model 139666) is designed to bring order to home theater and media setups by letting you connect up to four HDMI source devices — such as a streaming box, game console, Blu-ray player, and cable box — to a single HDMI input on your TV or projector. It handles 4K resolution at 60Hz with full 24-bit RGB and YCbCr 4:4:4 color depth, and supports HDR content, ensuring your picture quality is preserved through the switch. HDMI 2.0a and HDCP 2.2 compliance means it works with current-generation devices and copy-protected content without compatibility headaches.

Where this switch stands out from basic HDMI selectors is its built-in audio extraction capability. A Toslink optical output and an analog audio output let you route sound to an external audio system — such as a soundbar, AV receiver, or powered speakers — independently of your display. The bidirectional IR pass-through and super wideband IR control system allow you to manage source devices tucked away in a cabinet, and the included IR remote provides straightforward input selection. It also supports Dual Audio Return Channel (ARC) control for added flexibility in audio routing between the display and connected devices.

Key Features

Compliant with the HDMI 2.0a and HDCP 2.2 specifications.

Feature 4 HDMI inputs and 1 HDMI output.

Supports video resolutions up to 4K@60Hz with 24-bit RGB/YcbCr 4:4:4.

Supports Dual Audio Return Channel (ARC) control.

Super wideband IR control system. Bidirectional IR pass-through.

Specifications

HDMI Inputs
4
HDMI Output
1
HDMI Version
HDMI 2.0a
HDCP Compliance
HDCP 2.2
Max Video Resolution
4K@60Hz (24-bit RGB/YCbCr 4:4:4)
HDR Support
Yes
Audio Extraction
Toslink and Analog Audio
ARC Support
Dual Audio Return Channel
IR Control
Super wideband, bidirectional pass-through
Brand
Monoprice
Model
139666

Pros & Cons

👍 Pros

  • Supports full 4K@60Hz with HDR and 4:4:4 chroma for high-quality video passthrough
  • Built-in audio extractor with both Toslink and analog outputs adds flexible sound routing
  • HDCP 2.2 compliance ensures compatibility with modern protected content sources
  • Bidirectional IR pass-through allows control of source devices hidden in a cabinet

👎 Cons

  • Only one HDMI output, so you cannot send video to two displays simultaneously
  • No CEC pass-through, which limits automatic device power-on and input switching
  • Does not support HDMI 2.1 features such as 4K at 120Hz or variable refresh rate
  • Manual source selection may be needed if auto-switching does not detect the desired input

Frequently Asked Questions

The switch supports four HDMI inputs connected simultaneously, with one HDMI output to your display. You select the active source via remote or IR control.
It supports 4K at 60Hz with 24-bit RGB and YCbCr 4:4:4 color, compliant with the HDMI 2.0a specification.
It features both a Toslink optical output and an analog audio output, allowing you to route audio to a soundbar, receiver, or powered speakers independently of the HDMI output.
Yes, it is fully compliant with HDCP 2.2, so protected content from streaming devices and Blu-ray players will pass through without issues.
Yes, it includes a super wideband IR control system with bidirectional IR pass-through, making it compatible with most universal remotes and IR control systems.