Portable USB headphone amps

Specs as supplied by the manufacturer.

Emotiva Little Ego $169

32 BIT / 384K USB Dac

 

Emotiva

  • USB Interface (input): Asynchronous, USB Audio Class 1 and 2
  • Output: Headphone (analog; variable)
  • Format: PCM digital audio
  • Direct coupled audio path
  • Digital Filter Options: Symmetrical ; Asymmetrical Low; Asymmetrical High ­
  • Headphone Blend Mode: Switchable ­
  • Maximum Output Level: 1.8 VRMS
  • Sample Rates Supported: 
    Apple computers: 44.1k, 48k, 88k, 96k, 176k, 192k, 352k, 384k (no drivers required)
    Windows computers: 44.1k, 48k, 88k, 96k, 176k, 192k, 352k, 384k (with free drivers)
    Windows computers: 44.1k, 48k, 88k, 96k (driverless)
  • Bit Depths Supported: 
    16 bits, 24 bits, 32 bits
  • Frequency Response:
    8 Hz to 20 kHz (+0 / -0.3 dB); 44.1k and 48k sample rates
    8 Hz to 40 kHz (+0 / -1.5 dB); 88.2k and 96k sample rates
    8 Hz to 60 kHz (+0 / -3 dB); 176k and 192k sample rates
  • Signal to Noise Ratio:
    > 106 dB (A-weighted)
  • Total Harmonic Distortion + Noise:
    < 0.006%
  • Dimensions: 4.75" x 1.75" x .5"
  • Weight: 3.6oz
Added 2015