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The Moving Soundstage

This is one of the best wireless speakers yet developed by ub+. We spent over a year putting our passion and effort, creating the next generation of phenomenal wireless audio product. Alphorn by ub+ is to have a beautifully crafted state-of-art design while looking, feeling and most importantly, sounding spectacular.

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ARK (meaning ark angel) PHORN (music from Angelic sound)

Spherical appearance is not just one thing on its good looking. The well balance and symmetric position for each speaker harmonize the sound amplitude. Also greatly decline the sound distortion with lesser unwanted casing vibration. By means of this synchronic reflection like mirror effect through the unique resonance channel, good sound quality is preserved. Low pitch is enforced in power with clarion tone. Creating synchronic sound through an unique resonance channel.

Four drivers is a symmetrical position, balancing off the pressure created by the speakers which harmonises the sound amplitude.

At a glance

  • Orchas™ upgraded super bass​
  • 250 mm diameter dome​
  • Patented enclosure design​
  • aptX Bluetooth wireless technology that enables audio of CD-like quality​
  • Pure digital audio transmission and amplification that provides a near lossless delivery to the driver​
  • Wireless stereo pairing of two speakers through True Wireless Stereo (TWS)​
  • Power that can be supplied by a high capacity battery, ensuring the audio playback is crystal clear and free of all noise and be able to play music with dynamic changes confidently​
  • Volume reaching up to 93dB
  • Playback at moderate volume indoors can last up to an amazing 20 hours with the built in battery​
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Battery life
Binge watch your favorite movies from morning till night. Or bring our speakers to party from night till dawn. worry not if the battery will last, worry more if you will have enough stamina that lasts!
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Low base
Who needs a clunky subwoofer when a single speaker unit can already rule them all! Our patented enclosure design makes it possible for low frequency sound to pass through, delivers powerful bass output! Did we mention each speaker can delivers up to 93dB of sound?

True Wireless Stereo (TWS)

True Wireless Stereo (TWS) is a wireless technology that allows two speakers to connect, sync, and play audio simultaneously. Stream audio from your phone via Bluetooth/NFC and use TWS to double your audio output and play across bigger spaces!


S2+ Alphorn happy users


S2+ Alphorn supports up to 20 hours of audio playtime. However, it’s important to note that actual battery life may vary depending on level of volume and content.

S2+ Alphorn works with Bluetooth 5.0.

Classic and pop music. Fathoms deep bass. Remarkable clarity and definition in vocals or delivers deep bass response and remarkable clarity in vocals.

Using the physical buttons to activate TWS: Press and hold both button and button together for three seconds for the speaker to go into TWS pairing mode. Speaker will sound out TWS connected.

True Wireless Stereo refers to a technology which allows you to pair two UB+ speaker devices via Bluetooth.


Driver(4” Bass +1.5” Tweeter) X2​
Output20 W + 20 W
Sensitivity79 dB​
Pure digital amplifierNA
Frequency response38 Hz - 20 kHz
Impedance4 ohms​
Battery capacity11.1 V 2200 mAh​
Battery charging voltage5 V USB
Playback time20 Hours​
InputsBluetooth, USB type C, 3.5 analogue​
BluetoothV5.0, BLE, AVRCP V1.6, APTX APTX LL, SBC AAC, 9 dBm​
DimensionsW248 x D250 x H250​ mm
Enclosure diameter250 mm
Weight2.7 kg
Height (on tabletop base)252 mm​
Height (mounted on legs)930 mm

What's in the box


Bluetooth 5



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USD 329.00

3 interest-free instalments with available for Singapore customers. Learn more →


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