"The Wire" Ultra-High Performance Headphone Amplifier - PCB's - Page 180 - diyAudio
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Old 13th February 2013, 03:02 PM   #1791
IanAS is offline IanAS  England
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Quote:
Originally Posted by opc View Post
a "performance at any cost" approach.
Very glad to hear that Me too Although for me cost has become an issue of late.

Thanks for sharing your experience of those DACs I'll save some time and money and not buy and try the 9023 then I found that one on a PCB from Malaysia for about £40 delivered to the UK with the same USB receiver as the £100 ODAC. I wondered if it's better then the AK4396 DAC chip I'm using. The better ESS chips seem hard to obtain.

Cheers,
Ian
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Old 17th February 2013, 05:01 PM   #1792
MWL168 is offline MWL168  United States
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Thanks Owen!

Here are a few photos of the finished product as promised. Due to the lack of skill, patience and chassis space, the wiring is a bit messy and the metal work left much to be desired as well.

The WIRE may not be quite break-in yet, I only have maybe 30 some hours of playing time on it. But one thing I can confirm now, which I noticed within the first song I played through the WIRE, is that this amp does bass like no other headphone amp I've heard, it's deep and well controlled. The WIRE gives the HD650 bass extension that I did not know it possesses. The WIRE also appears to be extremely revealing - I hear nuances in the music that I did not notice previously.

Thanks again for your help! Without you, gusp and DIYAUDIO this amp would not have been possible!
Attached Images
File Type: jpg headphone amp - top - 1.jpg (829.6 KB, 778 views)
File Type: jpg Haedphone amp - front.jpg (581.9 KB, 714 views)
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Old 17th February 2013, 05:04 PM   #1793
MWL168 is offline MWL168  United States
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I had difficulty attaching more than two photos so here are two more photos of the amp ...
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File Type: jpg headphone amp - rear.jpg (714.1 KB, 636 views)
File Type: jpg headphone amp - top - 2.jpg (928.3 KB, 603 views)
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Old 17th February 2013, 05:18 PM   #1794
Can you say Audio?
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Very nice! I've struggled with casework/wiring myself - though I strive to improve it each project I take on. Overall, given the space constraints you have - I think you've done a good job (from one rookie to another :-).

I've been working on my own casing for wire that rolls up my BIII, NTD1 IV and FIFO. I'm getting closer. I'm looking for 1/2 transformers that'll replace all these separates. Then, I'm putting together a UF.L/Otto II wiring harness that'll replace the current digital domain wiring. The NTD1 is known for throwing off serious heat, and this case design has finally put that issue to rest.
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Old 17th February 2013, 07:18 PM   #1795
Co60 is offline Co60  United States
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Finally got around to finishing this up. Thanks to Owen and everyone here for making this possible.

Housed in a re-purposed Lacie hard drive case. Plan on removing the Lacie logo, repainting and wiring an LED.
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File Type: jpg The Wire1.JPG (842.6 KB, 292 views)
File Type: jpg The Wire3.JPG (941.5 KB, 304 views)
File Type: jpg The Wire + Gamm2.JPG (626.2 KB, 285 views)
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Old 17th February 2013, 09:32 PM   #1796
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What is the output power of this amp into say, 8 ohms?
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Old 17th February 2013, 10:05 PM   #1797
opc is online now opc  Canada
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Quote:
Originally Posted by kuribo View Post
What is the output power of this amp into say, 8 ohms?
Kuribo,

I answered most of your questions here:

"The Wire" Ultra-High Performance Headphone Amplifier - PCB's

The current limit is 250mA peak for all the amplifiers and the voltage swing is 16V peak for the SE and about 28V peak for the BAL-BAL.

Regards,
Owen
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Old 17th February 2013, 11:22 PM   #1798
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so about 7 watts for the bal bal version?


Yes, I would like to use it with electrostatics and an adapter (step up transformer) as mentioned.

I am told the adapter has a nominal impedance of 8 ohms and that the headphones need at least 4-5 watts power through it to work well....

Last edited by kuribo; 17th February 2013 at 11:25 PM.
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Old 18th February 2013, 12:35 AM   #1799
MWL168 is offline MWL168  United States
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Hi Co60:

Nice work and creative. It looks great!

Hi MisterRogers:

That's quite a project you got going there! Great work! Hope you find the transformer that meets your needs.

The chassis I use was bought from China - the shipping costs nearly as much as the chassis itself. All I had to do was drilling the holes for the Neutrik connectors and top plate ventilation.

I originally used Mogami shielded balance cable between the IVY and the WIRE but it was too bulky for the space I have to work with. I ended up replacing them with braided Cat 6 wires hoping the balanced topology of the set up would be more tolerant. We'll see if interference becomes a problem. So far it seems to be working fine.

Interestingly, the whole set up sounds different after I put it in the chassis. I don't think the wiring change or break-in explains it. Very curious!
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Old 2nd March 2013, 12:40 AM   #1800
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Quote:
Originally Posted by opc View Post
Yes...

It's in the works right now. I will be offering all variants in a new layout that is designed to fit in an extruded chassis.

I'll be offering bare PCBs, completely assembled PCBs, and likely a fully assembled product style version.

Stay tuned here for a link in the coming weeks.

Cheers,
Owen

Been several weeks-any updates???
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