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.
Our Objective2's are assembled 100% in accordance with NwAvGuy's default, high-performance specifications. As well as strictly adhering to the original O2 bill of materials, all of our components are sourced exclusively from authorized US suppliers.
Reference Grade Sound
Objective2 achieves vanishingly low THD and noise performance for audible perfection.
Low Output Impedance
O2's extremely low output impedance ensures transparent frequency response for all headphone loads.
At over 600mW, Objective2 provides enough output power to drive all dynamic headphones on the market with authority.
|Frequency Response||+/-0.1 dB (20Hz-20kHz)|
|THD 1 Khz 150 Ohms||0.0016%|
|IMD CCIF 15 Ohms||0.001%|
|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|
|Case Dimensions (mm)||108.50 x 80.00 x 29.50|
|Case Dimensions (in)||4.27 x 3.15 x 1.16|
|Input||3.5mm or RCA*|
|Output||3.5mm or 6.35mm*|
|Power||Battery or 14-20VAC|
|Gain||2.5x and 6.5x*|
|Volume Potentiometer Taper||Alps 15A or 3B|
|Batteries||2x9V LSD NiMH|
|* Custom Configurations Available|
Black and Silver Edition: Default configuration, featuring front mounted 3.5mm (1/8") headphone jack, 3.5mm input jack, and AC power jack.
Customize: Choose a 3.5mm or 6.35mm (1/4") headphone jack, front or rear mounted AC power jack, 3.5mm or RCA analog input jack, and custom gain levels. Customized units ship within 1 business day, exclusively in black!