Objective2 Headphone Amplifier
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.orgís 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. Itís large and heavy, so hardly worth consideration as a portable amp, however, O2 lives up to its name.
For more information on the O2, please refer to NwAvGuy's O2 Details article.
Remember to select an AC Adapter!
|For North America (120V)||For EU, UK, or AU (220-240V)|
Power adapters are sold separately, as we ship worldwide (power standards vary by country). Please refer to the instructions, or our Objective2 Power Adapter Guide for more information. Recommended power adapters include:
There is no reason to change the stock gain unless you regularly listen at extremely low volumes. Gain can easily be changed by removing two resistors.
We can set gain of 1.0x/6.5x or 2.5x/1.0x upon request. Other combinations are also possible, but may delay shipment by 1-3 business days. Simply make your special request(s) during checkout.