Simplecom CM423 HDMI Audio Extractor 4K HDMI to HDMI and Optical SPDIF + 3.5mm Stereo
SKU: 91003721047

Simplecom CM423 HDMI Audio Extractor 4K HDMI to HDMI and Optical SPDIF + 3.5mm Stereo

Sale price$66.60 Regular price$74.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Simplecom CM423 HDMI Audio Extractor 4K HDMI to HDMI and Optical SPDIF + 3.5mm StereoWe all know HDMI transmits both video and audio through the single cable. This adapter is the ideal solution when we would like to output the audio through an external speaker system with analog or optical input, also when an older audio system without HDMI input. Simplecom CM423 HDMI audio extractor enables a user to extract the embedded audio from an HDMI source and output audio separately on either an analog stereo audio connector or a digital

We all know HDMI transmits both video and audio through the single cable. This adapter is the ideal solution when we would like to output the audio through an external speaker system with analog or optical input, also when an older audio system without HDMI input. Simplecom CM423 HDMI audio extractor enables a user to extract the embedded audio from an HDMI source and output audio separately on either an analog stereo audio connector or a digital optical SPDIF connector. The video stays within the existing HDMI signal and can be sent on to the DVI or HDMI display.  

This little adapter can be placed behind your AV hardware and powered by USB, which can take power from included wall charger or an available USB socket on your TV, Media Player or PC. CM423 meets the HDMI v1.4b standards with 4K x 2K support, which is ideal for home theatre Blu-ray and streaming video content at Ultra HD, as well as 1080p 3D and 2D down to standard-definition.

Features

Convert 1 HDMI input to 1 HDMI + (SPDIF + 3.5mm or R/L) audio output

Ideal solution  for connecting external speaker system with analog or optical input, or older audio system without HDMI input

Powered by USB (5V/500ma), Mini USB Power Cable and Wall Changer included

Simultaneous audio output to both audio outputs (HDMI Audio Splitter)

HDMI 1.4 Compliant and supports Ultra HD 4K x 2K Resolution

Supports compressed audio such as DTS Digital / Dolby Digital and uncompressed LPCM audio

Specifications

Input: 1x HDMI Input

Audio Outputs: 1x SPDIF (Optical), and 1 x 3.5mm Stereo Audio (Analog)

Video Output: 1x HDMI output (HDMI pass-through)

HDMI resolution support: 2160p @ 30Hz / 1080p @ 50/60 Hz / 1080i / 720p /1576i / 480p / 480i

Max Bandwidth: 340 MHz

Max Baud Rate: 10.2 Gbps

Input/Output TMDS signal: 0.5~1.5Volts p-p (TTL)

Input/Output DDC signal: 5Volts p-p (TTL)

Max working current: 500mA

HDMI 1.4b compliant

HDCP 1.4 compliant

Dimension: 60 x 54 x 20mm (LxWxH)

Package Contents

1x HDMI Audio Extractor

1x 0.5M HDMI Lead

1x USB Power cable

1x 3.5mm to 2RCA(R/L) Adapter

1x USB Wall Charger

1x User Manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91003721047

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4.4 ★★★★★
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Verified Purchase
cpt
West Palm Beach, US
★★★★★ 5
Good buy, great fit!
Size: 12, Color: White
Very satisfied with the fit, style, and quality of these shoes. Usually scared to buy shoes online due to the sizing issues or difficulty. These were no sweat. Good delivery as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
C
Verified Purchase
Chris
Houston, US
★★★★★ 5
Buy them!
Size: 8.5, Color: Black
Great fit, very comfortable and they look great. Highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
T
Verified Purchase
Trey S
Carnegie, US
★★★★★ 3
Doesn't really slip on too well.
Size: 11, Color: White, Size: 11, Color: White
Doesn't really slip on too well. Also, since the heel is ridged it unintentionally allows my heel to slip out while walking.
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Reviewed in the United States on June 8, 2026
K
Verified Purchase
King Richard
Bozeman, US
★★★★★ 4
Really like these for casual summer outfits
Size: 10.5, Color: White
These are really nice kicks. Stylish, comfortable, and eye catchy for sure. Not too heavy, good price, and fit well. These are great, casual white shoes for a summer outfit. I gave it 4 out of 5 stars as these do pick up and hold onto dirt and smudges more than I’d like to see. Yes, I know, white shoes are magnets for this stuff, but these tend to scuff and discolor more than I would have assumed. I live in an area with lots of bad weather most of the year so I only get a chance to wear them for a few months of the year unless I want to brave the wet and muddy weather. If you live in an area that has lots of sun and are willing to put these to the test and clean them often, I would say go for it.
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Reviewed in the United States on January 13, 2026
F
Verified Purchase
fred crane
Natrona Heights, US
★★★★★ 5
Terrific shoes
Size: 8.5, Color: Cognac
Fit is perfect. Looks great. Comfort is terrific. Wood buy them again.
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Reviewed in the United States on November 8, 2025

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