CALYX PAT – USB DAC and Headphone Amp
CALYX PAT – USB DAC and Headphone Amp
CALYX PAT – USB DAC and Headphone Amp
CALYX PAT – USB DAC and Headphone Amp

CALYX PAT – USB DAC and Headphone Amp

Well Rounded Sound, CALYX PAT’s authorized dealer in the United States, is pleased to introduce this diminutive and affordable USB DAC & Headphone Amplifier.

Defy the odds of affordable digital to analogue conversion with this gem called PaT (pronounced “pot” which means bean in Korean, in reference to its small size). Specifically designed to boost music from your smartphone, PaT works just as well with your tablet or laptop. The striking versatility of PaT is what makes it unique.

“… being able to super-charge one’s Android or iPhone for a mere US$99 is sure to make entry-levelers sit up and pay attention ...

John Darko, Digital Audio Review

PaT’s proprietary mix of DAC and headphone amplifier circuitry from Calyx Audio - a South Korean company specializing in patented, unrivaled class D amplification technology with an obsession for design detail - enables it to support files up to 16-bit/48 KHz and handle AIF, M4A, WAV, FLAC, MP3, & OGG formats.  PaT provides sufficient power (0.8 V output) for in-ear monitors and efficient headphones through its 3.5mm headphone jack. Hardware controls on the front work seamlessly with iOS and two micro USB cables are provided for Android OTG plug and play.  An Apple camera kit adapter is sold separately.

Leave behind the dull, compressed background noise you are used to with direct playback from your device and embrace the clear sound and excellent dynamics of analogue with PaT.

“The overall reproduction of digital music had a more realistic quality with greater detail and space than any of on-device audio I tried.

Sebastian Peak, PC PERSEPCTIVE


  • Portable USB DAC & Headphone Amplifier (without a separate battery) for plug and play analogue OTG
  • Connects to Windows, Mac, Android and iOS (without the need to download device drivers) for easy use with all your devices
  • Supports up to 16-bit/48 KHz and handles AIF, M4A, WAV, FLAC, MP3, OGG formats for an  optimum and affordable mobile DAC
  • Hardware controls (volume up/volume down/play/pause/previous/next) for convenience and seamless integration with iOS
  • Ships with micro USB cables for Android, PC & MAC for easy integration with all your devices
  • Ultra light CNC milled aluminum chassis in sophisticated colors for stylish portability
  • LED light indicates PaT is connected
  • 1 year warranty


  • Power Source: USB
  • Rated Impedance: 32 ohms
  • THD+N Ratio: 0.009 % @ 1 kHz
  • Output Impedance: 1.8 ohms
  • SNR: -98 dB @ 1 kHz
  • Channel Separation: -70 dB @ 1 kHz
  • Frequency Response: 20 Hz ~ 20 kHz
  • Dynamic Range: 98 dB @ 1 kHz
  • Volume Control: 0 ~ -64 dB
  • Color: Wine / Cyan / Gold
  • Dimensions: 60 X 30 X 7.5 mm
  • Weight: 20 g