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Old 21st January 2017, 04:28 AM   #1
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Default Death Of Zen Headphone Amplifier

Progress Of my diy Death Of Zen Headphone Amplifier (Server yes thats a raspberry pi)



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The Most recent of my youtube videos:

https://www.youtube.com/watch?v=QP2boI2eDIg
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Old 21st January 2017, 05:18 AM   #2
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My first idea starting this Project was just to have a super clean Class A amplifier. This project for me has morphed into a small project to a huge one. It has came from normal headphone amp to a flagship amplifier.

I have added on (because i though it would be a cool) a Raspberry Pi hence the server part of my project. At this current moment the server side is not complete and is in the works. I plan on using Volumio 2 as my primary software. I also plan on making videos of all my progress. Please Join me in the completion of this awesome project. My YouTube channel is called iybtech. I plan on making more videos with all my projects in the future.
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Old 21st January 2017, 05:59 AM   #3
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Old 21st January 2017, 01:18 PM   #4
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The DOZ amp that i built is designed by Rod Elliot (Death of Zen Class-A - Use it as a headphone amplifier)


Supply Voltage 20V
Suggested Quiescent Current 200 mA
Maximum power See Table 1
Output Noise (unweighted, 1k ohm source) <1 mV
Distortion @ 1kHz, 4V RMS at output < 0.4%
Output Impedance 120 ohms
Frequency Response (-0.5dB @ 100 mW) <20Hz to >50kHz


I happen to be running the amp at 36v with a Quiescent Current of 330ma. I will be lowering the Quiescent Current down closer to 200ma sooner than later.
I had it higher for stress and heat distribution testing. Another slight change from the original design is the omittance of the 120ohm feed resistor.



If anyone has good Instructions I would like to test it on a oscilloscope? I don't know where to start for basic tests but i have the equipment available.
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Old 21st January 2017, 04:17 PM   #5
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Location: Canada
Hi,

Nice project.

Can I ask you where you bought your case ?

Thanks,
Eric
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Old 22nd January 2017, 03:16 AM   #6
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I Bought it in Okinawa at a nice place called Okinawa denshi's. It cost 5000 yen which is about 50 dollars.
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Old 20th February 2017, 06:03 PM   #7
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Below is video about the server section of my project and it simple configuration.

https://www.youtube.com/watch?v=jziPhAEy1vs
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