Objective2 Headphone Amplifier – standard 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.

SKU: O2-HPA-STD Category: Tags: , , ,


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 Output 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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