Cute curve is a kind of Class-B Headphone Amplifier with push-pull structure, and low noise/low distortion features. Adopting both Series and Shunt types can let the users select their ideal type of Volume Control. High electric current output can pretty much drive headphones of any impedance. OP amplifier can be changed by yourself to turn the tone. Using Cute Curve can easily make you enjoy high-quality and awesome sound.

Technical Specifications

  • Amplifier Structure : Coupling capacitor less, Push-Pull with Class-B
  • Power Structure : Virtual-Ground power supply
  • Gain Control : Low (attenuation 20dB) / High (normal)
  • Volume Control : Series / shunt mode selectable
  • Headphone Impedence : 32 ohm to 600 ohm
  • Circuit Protect : Output short / over current protect
  • Main OPAmp : TI ? OPA2604
  • Servo OPAmp : TI ? TL072

Audio Performance (1kHz sine wave, 2Vrms output)

  • Frequency response (From 40Hz to 15kHz) : 40Hz +0.01dB, 15kHz -0.02dB
  • Noise level (1kHz, A-Weighted) : -104.7dB
  • Dynamic range (1kHz, A-Weighted) : 104.6dB THD% : 0.0018%
  • Stereo crosstalk : -90.0dB


  • Line Input : 1 of RCA jack
  • Line Output : 1 of 6.4mm phone jack

System Requirements

  • Using in any equipment with Line-out or Pre-out function

Package Contents

  • Curve
  • DC24V 0.5A power adapter
  • User manual
  • Warranty card
  • Wrench

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