Category Archives: O2/Odac amplifier

Objective2 Headphone Amplifier and ODAC

O2 or Objective2 is an open source headphone amplifier designed by the brilliant and shy engineer  NwAvGuy.  His purpose was to design an objective sounding headphone amplifier at relative low cost, that could compare to the most expensive neutral headphone amplifier made. He also made sure to make a design with the lowest possible input impedance, hence making it a good fit for any set of headphones, regardless of impedance. He claimed that nobody would be able to hear the difference in a blind test, compared to any neutral sounding headphone amplifier,…