These speakers are what you’d find in the center of an art, molecular science and hi-fi Venn diagram and I want them
I'll take the H2O and Flora 5, thanks
Sign up for breaking news, reviews, opinion, top tech deals, and more.
You are now subscribed
Your newsletter sign-up was successful
- Ultrasonic Audio's wall-mounted sound systems are four years in the making
- The Slovenian firm has distribution agreements in 18 countries; says UK and Australia 'coming soon'
- Prices for the H2O model start from $4,472, but you can 'design your own'
Remember in chemistry class when you learned how to draw a water molecule because it had one oxygen and two hydrogen atoms, joined together by strong polar covalent bonds?
I can still hear my science lecturer yelling "Remember! Covalent bonds are happy bonds", and 'happy' is undoubtedly what I'd be if I could install the Flora 5 (main image) and H2O (pictured below) on various feature walls in my home.
What you're looking at is Molecule, a wall-mounted, modular hi-fi sound system made by Slovenian audio specialist Ultrasonic Audio, following almost four years of research and development.
Its makers say it can consist of up to 10 active speakers and one power unit, connected in a user-defined pattern (Mother Nature not good enough for you, eh?) and the company will happily prompt you to 'design your own' on its site, which is fun. After that, you can request a quote for your creation – which might not be quite so fun.
Great chemistry
The Molecule sound system is, says its creators, designed to "create a balance between visual aesthetics and high fidelity audio".
The finish materials are largely natural (copper and wood in either Slovenian walnut or American walnut) and you can choose between large speakers (depth: 108mm; diameter: 350mm; weight 3.5kg) and small speakers (depth: 108mm; diameter: 300mm; weight 3kg) as well as large and small power units, splitters and connection tubes in copper with the option of lighter or darker patina.
In addition to the Molecule power unit's two RCA connectors and a 3.5mm jack, there's also Bluetooth baked in, for simply pinging audio to your Molecules from your phone.
Sign up for breaking news, reviews, opinion, top tech deals, and more.
How much is all this going to cost, then? Well, for the relatively bijou H2O model, prices start from $4,472 (which would be around £3,270 or AU$6,382 before any duties) but there's scalability here. It's hard to overlook this system's potential to go much bigger – I'm thinking 'huge wall of sound' configurations…

➡️ Read our full guide to the best stereo speakers
1. Best overall:
Q Acoustics M40 HD
2. Best compact:
Dali Rubikore 2
3. Best desktop speakers
Creative Pebble Nova
4. Best budget buy:
Q Acoustics M20 HD
Follow TechRadar on Google News and add us as a preferred source to get our expert news, reviews, and opinion in your feeds. Make sure to click the Follow button!
And of course, you can also follow TechRadar on YouTube and TikTok for news, reviews, unboxings in video form, and get regular updates from us on WhatsApp too.

Becky became Audio Editor at TechRadar in 2024, but joined the team in 2022 as Senior Staff Writer, focusing on all things hi-fi. Before this, she spent three years at What Hi-Fi? testing and reviewing everything from wallet-friendly wireless earbuds to huge high-end sound systems. Prior to gaining her MA in Journalism in 2018, Becky freelanced as an arts critic alongside a 22-year career as a professional dancer and aerialist – any love of dance starts with a love of music. Becky has previously contributed to Stuff, FourFourTwo and The Stage. When not writing, she can still be found throwing shapes in a dance studio, these days with varying degrees of success.
You must confirm your public display name before commenting
Please logout and then login again, you will then be prompted to enter your display name.