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Headphones Amplifier JDS Objective 2Headphones Amplifier JDS Objective
Headphones Amplifier JDS Objective 2
Headphones Amplifier JDS Objective

JDS Objective 2

155,00 120,00

Headphones Amplifier 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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Product Description

Headphones Amplifier JDS Objective 2 (Original Version)

AMPLIFIER DESCRIPTION

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 O2 headphone amplifier, ready for use. You will only need an AC adapter suitable for your region.
The Objective 2 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

  • 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 Specifications

  • 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

**Every Objective 2 includes a power adapter (8€ bought separately).


Objective 2 Reviews

  1. Head-fi
  2. CNET
  3. Headfonics

Objective 2 vs FiiO E9 – Frequency response

 

Additional Information

Weight 0.38 kg

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