JDS Objective 2

175,00

JDS Objective 2. (Original version) . The Objective2 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 Objective2 amplifier, ready for use.

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Description

The JDS Objective2 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 headphone amplifier, ready for use. You will only need an AC adapter suitable for your region.

 

The JDS Objective2 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 headphone amp for maximum benchmark performance to prove his points. It’s large and heavy, so hardly worth consideration as a portable amp, however, Objective2 lives up to its name.

 

 

Objective2’s are assembled 100% in accordance with NwAvGuy’s default, high-performance bill of materials:

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

Specifications

General

Gain: 2.5x and 6.5x

Volume Potentiometer Taper: 15A or 3B

Case Dimensions (mm): 108.50 x 80.00 x 29.50 (excludes jacks)

Case Dimensions (inches) = 4.27 x 3.15 x 1.16″ (excludes jacks)

Battery Run-time: 6-8 hours

Weight: 11 oz, with batteries

 

Audio

Frequency Response: +0.01, -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

Output Impedance: 0.54 Ohms

Crosstalk (15 ohms): 65 dB

Channel Balance (at 50% volume): 0.6 dB

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