Technical Specifications



  • Transducer One x 3" Full-Range  
  • Dual Neodymium Rare-Earth Magnet - Motor 
  • 4Ω Resistance 
  • 100 db volume full volume, measured at 3' [comparison: jet flyover at 1000 feet (103 dB)] 
  • Overdrive protection circuitry to avoid having a “blown” speaker, built-in


The porting in our speakers is important, it allows for added vibrations that transverse through the wood. Porting a speaker has become a lost art. Today most portable speakers use a passive radiator to manufacture bass, in small air volumes. At Princeton Audio, we don't. Our goal is to faithfully reproduce music as the artists intended it.


Adding vibration is paramount and therefore our transducers (the speaker element) in our S:One's are physically attached to the wood chassis on an exacting "thin spot". This was engineered intentionally to introduce those extra vibrations through the wood allowing it to become part of the system, thereby enhancing the sonic properties of the S:One.


Bluetooth Audio

Dedicated High-Bit Rate Bluetooth Module

  • Version 4.2, Dual-mode 
  • Total Wireless Stereo (TWS)  
  • High-performance Bluetooth codecs for best-in-class audio streaming


Dedicated Digital Signal Processor (DSP) and Digital to Analog Converter (DAC)

  • 24-bit stereo audio ADC and DAC: >98 dB SNR 
  • Sampling rates from 8 kHz to 96 kHz
  • Low power: 7 mW record, 7 mW playback, 48 kHz at 1.8 V

20w Class D

Dedicated 20 Watt Class “D” Chip Amplifier

  • Chip amp capable of 25 Watts at 24 Volts nominally running at 20 Watts
  • Closed-loop Class-D audio amplifier with 96-kHz, 192-kHz extended audio
  • Big clean sound


Battery Options

Lithium-Ion Battery Technology

  • 2250 mAh battery included with a 15+ hour run-time at full volume 
  • 3400 mAh battery with a 40+ hour run-time optional at check out
  • Provides steady, clean power to our electronics

Wall Power

15V 2A Wall cube included

  • Wall charger included to charge the battery 
  • Circuit optimized to run off clean battery power while plugged in 
  • No interruption of music if unplugged


Dedicated Battery charging IC

  • Extra hardware on board to manage and keep battery fresh 
  • Circuit designed to remain plugged in  
  • Extra level of battery protection



Length - 7.375" x Width - 7.62" x Height - 7.5" 


Weight (based on tonewood) - 2.86 - 3.76 lbs


Black, Bronze, 24k Gold 

 *Available at check out