HDSX TV Sound Optimizer Toslink

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30 days return policy – ​​no need to give reasons!

Clearly understandable dialogues

The actors are clearly understandable, the film music is balanced in the background

Uniform volume

Whether between film and commercial break, the volume remains pleasantly balanced

Shared television experience

Enjoy every TV experience together, regardless of hearing ability.

Relaxed TV volume

without waking the children or disturbing the neighbors

Patented audio technology for unique TV sound

With the HDSX TV Sound Optimizer you can choose TV sound without volume fluctuations and clearly understandable dialogues.

Simply plugged between the TV and an external speaker system (e.g. soundbar), you can experience uncompressed sound quality with more audible details in the soundscape.

The highlight of this HDSX TV Sound Optimizer variant: The patented 360-degree HDSX.headphone Surround Sound technology for immersive cinema sound with an analog headphone output. Hear film scenes as if you were right there! A powerful chip ensures the best TV sound in real time.

Enthusiastic reviews

Satvision (issue 5/2021):

“The HDSX TV Sound Optimizer ... achieved the top rating of 'very good'. This is largely due to the fact that it fully fulfills its promise of making voices more intelligible and preventing sound fluctuations between different channels, content and playback media without cutting off certain frequencies.”

Süddeutsche (28.04.2021):

“There is no need to constantly go back and forth with the volume rocker, and the best thing is: unlike the night mode of some soundbars, which simply cut off the volume peaks, the listener still doesn’t have the feeling that the sound is being leveled out.”

Download Satvision test report

HDMI ARC vs. Toslink – Which model is right for you?

In this video we show you how the HDSX TV Sound Optimizer revolutionizes TV sound. Find out how you can enjoy uncompressed sound quality with our device and experience clear dialogues without volume fluctuations. Whether HDMI ARC or Toslink - we explain the differences and help you make the right choice.

Service line and technical support

Do you have questions about installation? Or don't have an external sound system but would like a recommendation?

Our service line is open for you: Call us on 0800 767 68 74 (free in Germany; from abroad: +49 40-75 69 17 26) or write to info@hdsx.com , we will be happy to help you during our service hours. Personally and individually. Our team looks forward to hearing from you.

Technical data

Unparalleled sound clarity with the HDSX TV Sound Optimizer!


Metal, black

Power supply

DC 5V via Micro USB-B connector

Audio input

Toslink | Digital optical

Audio output Toslink

Toslink | Digital Optical

Audio Output Analogue

3.5mm mini jack stereo

scope of delivery

Complete accessories for unique sound!


HDSX TV Sound Optimizer Toslink


Cable USB 2.0, USB A plug to Micro USB B plug (50cm) | Cable Toslink (50cm). Please remove protective caps on both ends before use

Velcro straps

Self-adhesive Velcro strips for attaching the device behind the TV

Stand feet

4 rubber feet, self-adhesive for standing

operation manual

operation manual


Here you will find answers to the most important questions about our product. If you need more information, please visit our comprehensive FAQ page.