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HDSX TV Sound Optimizer


HDSX TV Sound Optimizer for consistent volume and intelligible dialog throughout TV and streaming. HDMI ARC. Unique sound upgrade through HDSX sound technology based on PCM 2.0. Digital multichannel formats can be used in parallel. Additionally HDSX.360. The new Virtual 3D Sound Engine from Kronoton creates big sound with constantly understandable dialogs. Also ideal for gaming via loudspeakers.

User Manual PDF
Video Manual

30 days money back
Shipping within 24 hours on weekdays


Patented audio technology for unique TV sound

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

With just one remote control from now on, you don’t have to constantly adjust the volume, just select the program or movie and enjoy.

Plugged between TV and soundbar, AV receiver or HiFi system, you experience uncompressed HDSX sound quality. At the same time, digital multichannel formats such as 5.1, DD+ and Atmos can still be used easily thanks to the passthrough mode.


In addition, the HDMI version of the HDSX TV Sound Optimizer includes another world first: Discover HDSX.360 at the touch of a button: Experience consistently intelligible dialogs, amidst an impressive 3D soundstage* thanks to virtual multichannel sound of a new generation. Dialogues clear from the center, undisturbed by music and noise. Music with a wide soundstage and precisely located sounds that move freely in space.

Normally, speech intelligibility drops drastically with virtual surround and 3D sound. This was the reason for the sound engineers at Kronoton to create a new standard here through a completely new development, which combines great cinema sound from a few speakers in the living room with clear dialogues. The days of incomprehensible home theater sound are over.

These highlights are enabled by a powerful chip in real time – for the new freedom of sound.

*The perceived intensity of HDSX.360 depends on the design and positioning of the sound system used.

Technical data

  • Enclosure: metal, stone grey
  • Power supply: DC 5V via micro USB B socket
  • Audio input digital: HDMI ARC IN
  • Audio input analog: 3,5mm jack stereo
  • Audio output: HDMI ARC OUT
  • Weight: 115 g
  • Dimensions: Length: 5.3 cm, Width: 10 cm, Height: 2.38 cm
  • Audio format input: PCM 2.0 uncompressed | Passthrough 5.1, DD+, Atmos
  • Sound output: HDSX.TV | HDSX.360 | Passthrough 5.1, DD+, Atmos
  • Immersive: HDSX.360 | Virtual 3D Soundstage | clear dialog
  • Sound transmission: PCM sound with two channels | In Passthrough mode: Digital multichannel formats according to ARC standard: Dolby Digital & DTS up to 5.1, Dolby Digital Plus, Dolby Atmos based on Dolby Digital Plus

Delivery Contents

  • HDSX TV Sound Optimizer HDMI ARC
  • Cable USB 2.0, USB-A male to Micro USB-B male (50cm)
    (This cable is located in the right inner wall of the package)
  • HDMI 2.1 cable (50cm), HDSX certified.
  • 3.5mm stereo jack cable (50cm)
  • Self-adhesive Velcro straps for mounting the device behind the TV set
  • 4 rubber feet, self-adhesive to stand the device on
  • Instruction manual

Service line and technical support

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

Our service line is switched on for you: Call us at 0800 767 68 74 (free of charge in Germany) or write to, we will be happy to help you within our service hours. Personal and individual.

Our team is looking forward to meeting you.


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