Simplecom CM425 HDMI 2.0 Audio Extractor Optical SPDIF and 3.5mm Stereo with ARC 4K@60Hz
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Simplecom CM425 HDMI 2.0 Audio Extractor Optical SPDIF + 3.5mm Stereo with ARC 4K@60Hz
CM425 is an upgraded HDMI 2.0 Audio Extractor, supports video resolution up to 4K@60Hz and audio output through Optical SPDIF or 3.5mm stereo. It also supports ARC (Audio Return Channel), so you can connect it to an ARC compatible TV directly. Its the ideal solution when you 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.
CM425 enables extracting of embedded audio from HDMI source or extracting of audio from an ARC compatible TV directly, and output audio separately on either an analog stereo audio connector or a digital optical SPDIF connector.
CM425 meets the HDMI 2.0b standards with 18Gbps bandwidth support, which is ideal for home theatre, 4K gaming and video streaming on a 4K TV. This little adapter can be placed behind your AV hardware and powered by USB, which can take power from USB wall charger or an available USB socket on your TV, Media Player or PC.
Features
HDMI 2.0b and HDCP 2.2 compliant with 18Gbps bandwidth support
Support HDR and video resolution up to 4K@60Hz
Convert 1 HDMI input to 1 HDMI + (SPDIF + 3.5mm or R/L) audio output
Support ARC (Audio Return Channel) for ARC compatible TV
Powered by USB, Micro USB port for power input
Three Audio Mode: Pass-through, 2CH and 5.1CH
Supports compressed audio DTS Digital, Dolby Digital and uncompressed audio PCM, LPCM
Specifications
HDMI Version: HDMI 2.0b (backwards compatible)
HDMI resolution support: 480i/480p/576i/576p/720p/1080i/1080p/4K@60Hz
Input: 1x HDMI Input
Audio Outputs: 1x SPDIF (Optical), 1 x 3.5mm Stereo Audio (Analog)
Video Output: 1x HDMI output (HDMI pass-through)
ARC Support: Yes (with switch)
HDMI 3D Support: Yes
HDCP Version: HDCP 2.2
Max Bandwidth: 600MHz
Max Baud Rate: 18Gbps
Support Color Format: 24bit, 30bit, 36bit deep color
Digital audio Support: Dolby Digital, Dolby TrueHD, DTS-HD, DTS, PCM, LPCM
Max Input Cable Distance: 10m AWG26 HDMI standard cable
Max Input Cable Distance: 10m AWG26 HDMI standard cable
Power Input: 5V/1A
Dimension: mm (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 User Manual
📦 Shipping & Delivery
Free Shipping on orders $500+. For orders under $500, a flat postage fee applies based on order weight (from $4.95).
Orders are dispatched within 1–3 business days of payment confirmation. You will receive a tracking email once dispatched.
Standard delivery: 3–7 business days (metro). Regional/WA/NT may take slightly longer.
🔁 Returns & Refunds
We offer 14-day returns on all items.
To be eligible, items must be returned in original, unused condition with all original packaging.
To start a return: email hello@myhappygift.com.au with your order number.
Refunds are processed within 5–10 business days of receiving the returned item.
🛡️ Warranty
All products include a 12-month manufacturer's warranty.
Covers manufacturing defects and faults under normal use conditions.
Does not cover accidental damage, misuse, or normal wear and tear.
To make a warranty claim, email hello@myhappygift.com.au with your order number and photos of the fault.
❓ FAQs
How long does delivery take?
Orders dispatch in 1–3 business days. Standard delivery 3–7 business days.
Do you ship to all Australian states?
Yes, we ship Australia wide including WA, NT, and all regional areas.
How do I track my order?
A tracking link is emailed once your order is dispatched.
How do I contact support?
Email hello@myhappygift.com.au or call (03) 9961 6069.
Mon–Sat, 9:00 AM – 10:00 PM AEST. We respond within 24 hours.
Are your products covered by warranty?
Yes, every product includes a 12-month manufacturer's warranty.
Curated for Quality
Every product hand-selected to meet our quality standards before it reaches your home
Fast Australian Dispatch
Orders dispatched within 1–3 business days from our Australian warehouses
Responsive Local Support
Australian-based team available Mon–Sat, 9am–10pm AEST. Reply within 24 hours
Backed by Warranty
Every product includes a 12-month manufacturer's warranty — shop with confidence
