Objective2 Headphone Amplifier – 6.3mm out version


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The Objective2 is a marvel in performance vs. cost and outperforms many more expensive headphone amplifiers on the market.

This product is currently out of stock and unavailable.


The Objective2 Headphone Amplifier is the first design of the US blogger and electrical engineer NwAvGuy which is produced under the Common Creative License.

Technical Specifications:

  • 3.5mm Input and 6.3mm headphone connector
  • ALPS Stereo Potentiometer
  • 220V~ 15 VAC 500mA Power supply (different plug styles available)
  • 2x 9V 300mA Ni-MH Batteries
  • Gain switch (2.5x and 6.5x gain as standard)
  • Size 108.5 x 84 x 30 mm (without Volume Knob)
  • Black or Silver case with matching panels
  • Black or Silver Volume Knob


Frequency Response +/- 0.1 dB
Noise (ref 400 mV) -105 dB
THD 1 Khz 150 Ohms 0.0016%
Output Impedance 0.54 Ohms
Battery Life ~8-10 hours

A full list of the measurements can be found in NwAvGuy‘s blog.

Additional information

Weight N/A
Case Color

All Black, All Silver, Black with Silver Front

Volume Knob

Black, Silver

Power Supply



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