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OBJECTIVE2-BLACK
OBJECTIVE2-BLACK
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OBJECTIVE2 Product Description


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. Featuring: Alps Dual Analog Potentiometer, 3.5mm Input and Output Jacks , Dual Gain Switch (2.5x and 6.5x) , Opamps: JRC NJM2068D, 2x JRC NJM4556AD , AC Jack - Rechargeable 9V NiMH Batteries

  • Reference grade amplification

    O2 is an opensource amplifier designed by brilliant engineer NwAvGuy, with emphasis on benchmark performance and low cost. O2 arrives fully assembled, hand tested, and ready to enjoy.


    Maximum benchmark performance, designed by NwAvGuy


  • TECH SPECS

    Amplifier Performance

    Frequency Response +/-0.01 dB (20Hz-20kHz)
    THD 1 Khz 150 Ohms 0.0016%
    IMD CCIF 15 Ohms 0.001%
    IMD SMPTE 0.002%
    Noise (ref 400 mV) -105 dB
    Max Output (33 Ohms) 613 mW
    Max Output (150 Ohms) 355 mW
    Max Output (600 Ohms) 88 mW
    Output Impedance 0.54 ohms
    Crosstalk (15 ohms) -65 dB
    Channel Balance (50% volume) 0.6 dB
    Battery Run Time 6-8 Hours

    Configuration

    Gain 2.5x and 6.5x
    Volume Potentiometer Taper Alps 15A or 3B
    Batteries 2x9V LSD NiMH

    Connectivity

    Input 3.5mm
    Output 3.5mm
    Power Battery or 14-20VAC

    Dimensions

    Case Dimensions (mm) 108.50 x 80.00 x 29.50
    Case Dimensions (in) 4.27 x 3.15 x 1.16
    Weight 11oz

  • Included

    • Fully Assembled O2 Headphone Amplifier
    • 2x Tenergy 9V NiMH, Low-Self-Discharge Batteries
    • Free Set of Rubber Feet
    • Instructions Guide

    AC ADAPTERS

    O2 requires an AC adapter to charge its batteries. We are including the Power Adaptor. As we ship worldwide, Be sure to select one of the following:

    CUSTOMIZATION

    Default gain levels of Objective2 are intended to work well with over 95% of headphones on the market. We use the stock O2 with headphones as low as 16 ohms @ 1 dB/mW, and as high as 600 ohms (very high and very low efficiency, respectively). There is no reason to alter stock gain unless you regularly listen at extremely low volumes. We can set custom gain of 1.0/2.5x upon request, or you can easily perform this change by removing two resistors.

 
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Price: $149.00

 
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