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Old 25th November 2015, 02:23 PM   #1
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Default New NP hpa-1 headamp

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Last edited by nicoch58; 25th November 2015 at 02:27 PM.
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Old 25th November 2015, 04:46 PM   #2
The one and only
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This product is the work of Jam Somasundram, who joined us early this
year. He's an old friend of the company, and previously consulted for Wadia
and Sumiko, and designed two amplifiers for Cary. A big fan electrostatic
loudspeakers (Stax headphones and Soundlabs panels).

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Old 25th November 2015, 08:21 PM   #3
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Originally Posted by nicoch58 View Post
Bloody beautiful.
If I can afford it I might just buy one.
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
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Old 25th November 2015, 11:22 PM   #4
mlloyd1 is offline mlloyd1  United States
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Nice work Jam, I'm looking forward to a listen.

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Old 26th November 2015, 06:25 AM   #5
jam is offline jam  United States
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Location: Auburn, CA, USA
Thanks for your kind words Michael.

I have known Mr.Pass for more than thirty years and he has been one of my mentors and has had a huge influence on my career. Getting the opportunity to join the Pass design team has been a dream come true (in other words play in Nelson's and Wayne's sandbox. I like to think of it as the Silicon Skunkworks)

What I have designed reflects ideas learned from Mr.Pass and other noted designers with my own take on the final implementation, while keeping with the Pass tradition of quality and excellence. Kudos to Desmond Harrington, for the design and cosmetics of the chassis. We have a talented group of people here that have contributed to this project.

I would like to thank Mr.Pass for the opportunity to design this amplifier and his kind input and advice.

Last edited by jam; 26th November 2015 at 06:44 AM.
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Old 26th November 2015, 09:35 AM   #6
The Dastardly Dad of Three
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Jam can you tell us a little bit about this design and what you reckon, modesty allowing, makes it special ?
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Old 26th November 2015, 11:53 AM   #7
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Location: Lisbon Portugal
I just don't like that neutrik locking plug! Is it necessary because of the amplifiers design?

Some amplifiers without output protection fry the output devices when the user removes the jack and momentarily shorts the channels to ground.

Other wise it's a beautiful design and would love to see some pictures from the inside!
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Old 26th November 2015, 12:13 PM   #8
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I like the look of neutrik ,will be better with black screw IMO
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Old 26th November 2015, 12:30 PM   #9
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Location: Belgrade RS
How about inside?
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Old 26th November 2015, 05:01 PM   #10
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Jam has corrected me - he came to PL last year.

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