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S1 Circle redefines compact audio, delivering immersive sound with clarity and depth, rivaling larger systems. Experience a world of extraordinary sound, where every note, rhythm, and beat comes alive.
The S1 Circle’s spherical design is inspired by the 19th-century Helmholtz resonator, showcasing enduring scientific brilliance. It delivers room-filling soundstage, revolutionizing your expectations from a portable speaker.
Experience audio as intended with the S1 Circle, ending the era of inadequate portable speakers. Hear every tone, note, and beat with exceptional clarity. Its strategic driver positioning creates a captivating surround soundscape. Brace yourself for goosebumps as music comes to life!
Experience an unprecedented, immersive soundscape with the S1 Circle. Its 360-degree sound core fills every room corner. Featuring 4 strategic drivers and 2 passive radiators, it delivers crystal clear audio with perfect balance and harmony.
No more mediocre bass! The S1 Circle delivers deep, implosive bass that shakes the party like never before. Dual 2.5″ woofers and passive radiators work in harmony for powerful, distortion-free bass, even at max volumes. Your guests will love it, though your neighbors might not!
No more worries about running out of battery during your party. The S1 Circle offers an impressive 20-hour battery life on a single charge, so the party can go on from dusk till dawn and beyond. Say goodbye to constant charge level checks with this small, powerful portable speaker!
Call off that big and expensive speaker system that you wouldn’t be able to move around—the S1 Circle has got your back, and it’s oh-so ready to blast mind-blowingly power audio.
Blast your tracks at a pool party, take your beats to the beach, or sing along while you’re having a shower. S1 Circle is IPX5 water resistant, and its fabric is waterproofed.
The UB+ speakers offer versatile options for an enhanced audio experience. Use TWS to pair two speakers for powerful stereo sound, ideal for various settings like TV setups, computer monitors, or outdoor parties.
For even more impact, connect up to 8 S1 Circle speakers in Matrix Mode to blast music from multiple locations simultaneously. Prepare to enjoy grand, immersive, and lively music like never before!
Enhance your home’s aesthetic with the S1 Circle speaker. Its soft fabric design, available in various colors, seamlessly blends with your furniture, be it on a TV stand, sofa side, or bookshelf. Beyond a speaker, it’s a stylish statement piece that elevates your living space’s ambiance.
Achieving a powerful sound from a speaker this small doesn’t happen out of the blue. We carefully selected the best combination of components for the job, and strategically placed them within a bass reflex system to achieve powerful implosive bass.
Achieving a powerful sound from a speaker this small doesn’t happen out of the blue. We carefully selected the best combination of components for the job, and strategically placed them within a bass reflex system to achieve powerful implosive bass.
Dual 28mm Tweeters
And then you’ve got the large dual 28mm (1.1”) silk single-dome tweeters — working in balance with the woofers to provide that oh-so satisfying clean and dynamic audio that’s perfect for all styles of music.
Dual 2.5” woofers
For the dual 2.5” (64mm) woofers, we opted for a 25.8mm (1”) copper-clad aluminum ribbon voice coil that provides a smooth and extended response — and coupled it with a neodymium magnet to propel the cone to move 20mm (0.8”) in a truly pistonic fashion.
No more connectivity issues! The S1 Circle uses Bluetooth 5.3 LE, ensuring a strong and reliable connection with optimized power consumption. Say goodbye to drops, lag, and drained batteries while enjoying uninterrupted music.
The S1 Circle is equipped with a built-in microphone, making it perfect for hands-free calls and conference calls. It also features advanced noise cancellation technology, so your voice is crystal clear — even in noisy environments.
Unlock S1's full potential with the UB+ Smartphone App. Enjoy total control at your fingertips: customize profiles, switch between devices, and use the equalizer for a tailored listening experience. Simply adjust the sliders until it's perfect and immerse yourself in your unique audio journey.
Driver | Passive Radiator x 2 + 2.5″ Woofers x 2 + 28mm Silk Dome Tweeters |
Output | 20W + 20W |
SPL (Sound Pressure Level) | 92dB |
Frequency Response | 45Hz – 17kHz |
Battery Capacity | 3 x 2500mAH |
Water Resistance | IPX5 |
Charging Type | USB Type-C |
Supported Bluetooth Formats | MP3/WMA/WAV/FLAC/APE/AAC |
USD 229.00
3 interest-free instalments with 
available for Singapore customers. Learn more →
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