Objective2+ODAC Rev B

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Starting At $279
In Stock

Reference Quality in One Box

Objective2+ODAC is an Objective2 headphone amp with integrated ObjectiveDAC. This high performance amp+DAC combo ships fully assembled, tested, and ready to use. Includes USB cable.


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The Objective2+ODAC combo is an Objective2 headphone amplifier with an ODAC installed in the same enclosure. Objective2 is an open source amplifier designed by NwAvGuy, with emphasis on benchmark performance and low cost. ODAC is a digital-to-analog converter designed along the same principles of maximum performance and value.

Together, Objective2+ODAC deliver reference grade audio performance at a fraction of the price of comparable equipment.

The Objective2+ODAC requires a mini-USB cable (included) and AC power adapter suitable for your region. Please note that the Objective2+ODAC does not contain batteries. Choose the separate Objective2 and Standalone ODAC if you require a rechargeable configuration.


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Objective2 Features

Our Objective2's are assembled 100% in accordance with NwAvGuy's default, high-performance specifications.

Reference Grade Sound

Objective2 achieves vanishingly low THD and noise performance for audible perfection.

Low Output Impedance

Objective2's extremely low output impedance ensures transparent frequency response for all headphone loads.

High Power

At over 600mW, Objective2 provides enough output power to drive all dynamic headphones on the market with authority.

Low Jitter

ODAC's audibly insignificant jitter (-112 dB) proves that reference quality D/A conversion can be affordable!

24-Bit Resolution

You'll enjoy Objective2+ODAC's 24-bit audio. Impressive dynamic range and low noise give perfect clarity.

Natural Frequency Response

Both the amplifier and DAC stages of Objective2+ODAC perform within +/- 0.1 dB of ideal frequency response.

Tech Specs

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DAC Performance

Freq. Response 20Hz-20kHz +/- 0.04dB
THD+N 100 hz -0.15 dBFS 0.0028%
THD+N 20 hz -0.15 dBFS 0.0015%
THD+N 10 Khz -0.15 dBFS 0.0024%
IMD CCIF 19/20 Khz -6.03 dBFS 0.0015%
IMD SMPTE -6.03 dBFS 0.0015%
Noise A-Weighted dBu 24/96 -103 dBu
Dynamic Range (A-Weighted) > 112 dB
Linearity Error -90 dBFS 24/96 -0.08 dB
Crosstalk -10 dBFS 100K 3.5mm -86.40 dB
USB Jitter Components 11025Hz -112.3dB
Maximum Output Line Out 100K 2.1 VRMS
Distortion < 0.005%

Data Support

Audio Formats 16/44, 16/48, 16/88.2, 16/96, 24/44, 24/48, 24/96
Interface USB, Audio Class 1
Native Driver OS Support Windows XP & Later, OS X x86, iOS, PS4, Linux


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

Amplifier Performance

Frequency Response 20Hz-20kHz +/-0.1 dB
THD 1 Khz 150 Ohms 0.0016%
IMD CCIF 15 Ohms 0.001%
IMD SMPTE 0.002%
Noise, A-Weighted -105 dBu
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


Gain 1.0 and 3.3x
Volume Potentiometer Taper Alps 15A


Analog Output 3.5mm or 6.35mm*
Analog Input 3.5mm
Digital Input Mini-USB
DAC Line Output 3.5mm or RCA**
Power Input 14-20VAC
* Denotes Customization Option
** See Jack Configurations below


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Package Contents

  • Objective2+ODAC RevB
  • 15VAC Power Adapter
  • 3ft Mini-USB cable
  • Rubber Feet


Jack Configurations

Black and Silver Edition: Default configuration, featuring front mounted 3.5mm (1/8") headphone jack, 3.5mm input jack, and AC power jack. Rear mounted digital USB input.
Custom Edition: Customize your Objective2+ODAC. Choose a 3.5mm or 6.35mm (1/4") headphone jack, front or rear mounted AC power jack, and optional 3.5mm or RCA DAC line-output. Customized units ship within 1 business day, exclusively in black!


Add Objective2+ODAC to your shopping cart to select your free AC adapter. Please note that Objective2+ODAC is an AC powered device and does not contain batteries. Additional 15VAC power adapters may be purchased separately.

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Select Configuration

Customize Your O2