IPar 1023A Tube Headphone Amplifier + Preamplifier

SKU: FM864
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Price: US$239.98
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  • Have very low noise and interference
  • Sweet tone and eliminate clinical digital sound
  • Good sound performance and reliable long years durability
  • Thick 8mm solid aluminum face panel and 2.5mm back panel

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Details

Description:
This headphone amp was developed by Abin Audio design house. This is headphone amp is another surprising for us to their astonish talent in audio design. This compact, complex circuit headphone amp have excellent sound performance and can drive almost all type of headphones on market very well.    


Features:
Integrate both pPreamp and headphone amplifier together, but each have independent volume control.
4 way RCA audio inputs, independent preamp and headphone output
Excellent circuit layout with incredible signal/noise ratio; -113db for preamp and -114db for headphone amp
High grade sealed 50W power transformer for very low noise and interference
Thick 8mm solid aluminum face panel and 2.5mm back panel.
Tube buffer stage with 5687 tube, very sweet tone and eliminate clinical digital sound
Very high grade parts usage, for good sound performance and reliable long years durability  
Adjustable gain for headphone amp; so this headphone can drive almost all headphone on market well.
Both 110/120v and 220/240v mode supported for worldwide compatibility


Technique Parameters:

Power input:110/120  (110V)  - 220/240V (230V) selectable   
Headphone Jack:6.3mm
Signal input:RCA socket
Preamp distortion:0.143% (5687 tube distortion)  
Headphone distorsion:0.154% (5687 tube distortion)
Preamp frequency response:20Hz(-0.4dB)-20KHz(-0.5dB)
Headphone frequency response:20HZ(-0.3db)-20KHz(-0.8dB)
Preamp S/N:-113.1dB
Headphone S/N:-114.3db
Headphone impedence matching :10 Ohm to 600 Ohm
Headphoe output power:300R loading/220mW,32R/480mW
Dimension/Weight:260 x 175 x 50mm ( W x D x H)/ 3.1kg

Customer Questions & Answers

Chris
Chris

hi! what opam used in this amplifier?

7/31/14 3:03 PM Asked.
shenzhenaudio.com
shenzhenaudio.com

Hi, this amplifier use OPA2604. Thanks  

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Jörg

What type of tube is inside, and what other type could be used as a replacement?

3/14/17 3:56 AM Asked.
shenzhenaudio.com
shenzhenaudio.com

Hi Jörg,the inside tube is GE5670,you can replace 396A tube.Thank you.

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David
David

I bought this amplifier a few months ago, but accidentally I damaged the output of the preamplifier. What kind of transistors can I use to replace damaged transistors in the preamplfier section?

5/2/17 1:26 PM Asked.
shenzhenaudio.com
shenzhenaudio.com

Hi David,  Please let us know the unit number.  The unit number in PCB board.  Thank you.

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David
David

The damaged transistors in the PCB have the numbers J301, J302 for the right channel and J303, J304 for the left channel output. But the transistors in themselves don't have any part number. The PCB have the annotation Ipar 1023A V3.1 2014-4. The amplifier don't have serial number. Thanks  

5/4/17 10:14 PM Asked.
shenzhenaudio.com
shenzhenaudio.com

Hi David,    J301 J303 is K246.  J302 J304 is J103.    Thank you.

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