genuine national JDSLABS Objective2 Black Edition By NwAvGuy headphone amplifier JDS LABS (japan import)

The Objective2 (O2) is an open source headphone amplifier designed by NwAvGuy, with emphasis on benchmark performance and low cost. This item includes a fully assembled and hand tested O2 amplifier, ready for use. You will only need an AC adapter suitable for your region. The O2 has created a stir in Head-Fi.org's do-it-yourself community. After being banned from Head-Fi for heated discussion, he proceeded to design O2 for maximum benchmark performance to prove his points. It's large and heavy, so hardly worth consideration as a portable amp, however, O2 lives up to its name.