Powered by battery

State of art battery managment technology – 100 hours play time

Battery is ideal power source for audio product. It is a clean power, free of noise and no hum noise induced. Lithium battery has high instant current, excellent load regulation, those are key factors to deliver punching sound.

Design a high efficient low voltage amplifier has lot of constraints. Our 5 years work get problems resolved, a low current consumption speaker can have high quality sound. We build the longest play time battery speaker ONEmini, it has 100 hours play time. 

  • 5-phase power control to minimise battery consumption
  • Isolated battery circuit, speaker always in charging will not damage to battery
  • 20+ year battery life time (assume speaker charge per month) 
  • Standard USB charger 5V 1A
  • Japan made battery

Design philosophy

The simple is the best.

We believe simple hardware and software can retain the original sound nature, error-free signalling flow from source to speaker, that can reproduce the true music sound. Speaker should not colourize music, never shift sound balance, output the sound as of originate as possible. Sound should be come with the most natural, long listening without fatigue.   

  • Minimum signal processing
  • 32×32 64bit audio depth to retain every sound details
  • Error-free signal flow, avoid any error along signal path
  • Eliminate timing errors, ensure each speaker sound are absolutely in-phase
  • Minimum analogue component, reduce characterisation and colourisation
  • Use Class D amplifier, excellent damping factor, lower overshoot by mean of less feedback 
  • Simple hardware, single chipset approach, no handover issues
  • All-in-one firmware, remove redundancy, the clean path
  • No DAC chip, avoid noise pick up, simplify power distribution
  • Digital amplifiers and no heat sink, reduce microphonic effect
  • No bass boost by signal processing, use acoustic design to amplify bass

Speaker enclosure build

How to build a handy size speaker to reproduce big sound stage, enclosure design is the most challenging. Enclosure must be strong enough to sustain high sound pressure. Circuitry should be as simple as possible. Speaker drive should have high efficient.

Magic of small size speaker play big sound, breakthrough physical limitation
  • Metal enclosure, high hardness thin wall : small exterior, big interior
  • Single piece body, no joint; curve design, strong edge
  • Plastic rear wall to balance metal ‘cool’ sound
  • Weighty enclosure, stabilize speaker
  • Separated PCB housing and battery bay, isolate internal sound vibration
  • Small electronic board, reserve more space for sound chamber
  • No sponge inside, no sound absorption

All-in-one firmware

We developed all software module : wireless + sound + application

We developed all software modules : DECT protocol stack, WiFi interface, sound processing and hardware controller.  Software modules are combined to a single firmware, loaded in a single chip, and run on a multi-core processor.

The ONEdonlge is a standard USB audio device can support stereo and 5.1 surround. Very small in size, but it has highly concentrated and sophisticated firmware. It is a HiFi quality transmitter, just plug and play.