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PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
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Old 18th October 2014, 09:33 PM   #1
gdan is offline gdan  Greece
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Join Date: Sep 2010
Location: Athens
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
Default PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)

I have available a very small quantity of PCBs for building the headphone amplifier as described in my article in Audioxpress June 2013.
You can find the article online if you have missed it :
Build A High-Quality, High-Power Headphone Amplifier | audioXpress
If you are interested, send me an email at: gntanavaras@gmail.com
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Old 27th October 2014, 04:53 PM   #2
gdan is offline gdan  Greece
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PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
Please note that 2 PCBs are required for the construction of a stereo amplifier.
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Old 31st October 2014, 07:49 PM   #3
gwrskien is offline gwrskien  Norway
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PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
Hello,

what is the price?
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Old 31st October 2014, 09:11 PM   #4
gdan is offline gdan  Greece
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Join Date: Sep 2010
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PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
Hi,
The price for each PCB is 30 euros.
Two PCBs are needed for a stereo amplifier.
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Old 16th November 2014, 05:29 PM   #5
gdan is offline gdan  Greece
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Join Date: Sep 2010
Location: Athens
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
The price is reduced to 25 Euros for each PCB.
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Old 6th December 2014, 03:08 PM   #6
gdan is offline gdan  Greece
diyAudio Member
 
Join Date: Sep 2010
Location: Athens
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
A few PCbs are still available.
If you are interested, send me an email at: gntanavaras@gmail.com

You can find the article online if you have missed it :
Build A High-Quality, High-Power Headphone Amplifier | audioXpress
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Old 13th January 2015, 12:45 AM   #7
adydula is offline adydula  United States
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Join Date: Aug 2010
If I want only to build one for headphones, unbalanced would I still need 2 boards?

Thanks
Alex
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Old 13th January 2015, 07:03 AM   #8
gdan is offline gdan  Greece
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Join Date: Sep 2010
Location: Athens
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
Each PCB contains the components for the raw Power supply, the regulated Power supply, the protection circuit and one headphone amplifier.

So if you want to build a two channel headphone amplifier you will need 2 PCBs.
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Old 4th June 2015, 03:36 PM   #9
gwrskien is offline gwrskien  Norway
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Join Date: Feb 2014
Location: skien
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
Hello,

Are these still awailable?
I have problem finding the relay in the article bom, could this be used?
G6A-274P-ST40-US-DC9
G6A-274P-ST40-US-DC9 Omron Electronics | Mouser

Thank`s
Gisle
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Old 4th June 2015, 08:40 PM   #10
gdan is offline gdan  Greece
diyAudio Member
 
Join Date: Sep 2010
Location: Athens
PCBs for a high quality Headphone Amplifier (Audioxpress 6/2013)
I have some DS2E-M-DC9V relays available. If you are interested send me a email at:
gntanavaras@gmail.com

Of course you can use any other relay if the dimensions and the layout are the same with the above relay. But you should recalculate the resistors R29, R35 and R36 so that the voltage on the relay is close to its nominal value. Otherwise you could overdrive the relay and it will get really very hot. You should check also that the temperature on the body of the resistors is normal.
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