★★Free JLH Hifi Headphone Amp PCB, 0.008% THD★★

siliconray · 16th December 2011, 09:37 AM

Keep on offering free audio PCBs..

Free JLH Headphone Amplifier Boards

This board is following JLH2005 design. Transistors used are: BC550, BC560 and MJE3055. Works excellent for 32, 120, 300 and 600 Ohm headphones. The THD is only 0.008%. Feel free to get 2 now, happy listenning!

gervenja · 16th December 2011, 09:51 AM

Hello Siliconray,

I would love to receive a pair of boards.
Please let me know what to do.

best regards John

siliconray · 16th December 2011, 09:56 AM

Hello Hohn

just click the link at the beginning of the post to "order" it. price is $0.01/pc because the system do not allow 0. What you need to pay is only shipping cost from China to your country.

andee1310 · 16th December 2011, 11:36 AM

If I want to connect it to headphone can I connected to one pcb or two pcb of this JLH Hifi Headphone Amp....?

siliconray · 16th December 2011, 02:08 PM

Hi Andee1310:

You can see from the photo there're 2 transistor one one board, that means one channel per board. You need 2 pcb to make a stereo. A 6.3mm headphone connector is comes with every 2 kit.

siliconray · 28th December 2011, 08:08 AM

Hello we developed a nice power supply for this headphone amplifier kit. Please see the details here:
Power supply for JLH headphone amplifier

dillmeister · 6th January 2012, 01:21 AM

Thanks Siliconray, I got my boards in record time and they look great. Not sure how fast I will populate them and see how they work but I am impressed with your quick response and packaging. ( :

siliconray · 6th January 2012, 08:45 AM

Great...looking forward to see your finished boards and testing result. Don't forget to adjust the static output voltage to 0 before connect headphone

gervenja · 6th January 2012, 11:37 AM

Received my boards from the post office today, they have been there for over a week.
Very nice boards, very fast shipping.
Thanks John

RS232 · 22nd January 2012, 06:20 PM

Thanks for the fast shipping
I have 2 questions
The first is the value of R10 ?
The second one is: do the BC550/560 need to be matched ?

Many thanks
Ric

16th December 2011, 09:37 AM	#1
siliconray diyAudio Member Join Date: Sep 2011	★★Free JLH Hifi Headphone Amp PCB, 0.008% THD★★ Keep on offering free audio PCBs.. Free JLH Headphone Amplifier Boards This board is following JLH2005 design. Transistors used are: BC550, BC560 and MJE3055. Works excellent for 32, 120, 300 and 600 Ohm headphones. The THD is only 0.008%. Feel free to get 2 now, happy listenning! __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

16th December 2011, 09:56 AM	#3
siliconray diyAudio Member Join Date: Sep 2011	Hello Hohn just click the link at the beginning of the post to "order" it. price is $0.01/pc because the system do not allow 0. What you need to pay is only shipping cost from China to your country. __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

16th December 2011, 02:08 PM	#5
siliconray diyAudio Member Join Date: Sep 2011	Hi Andee1310: You can see from the photo there're 2 transistor one one board, that means one channel per board. You need 2 pcb to make a stereo. A 6.3mm headphone connector is comes with every 2 kit. __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

28th December 2011, 08:08 AM	#6
siliconray diyAudio Member Join Date: Sep 2011	Hello we developed a nice power supply for this headphone amplifier kit. Please see the details here: Power supply for JLH headphone amplifier __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

6th January 2012, 01:21 AM	#7
dillmeister diyAudio Member Join Date: Jun 2009 Location: Prince George	Thanks Siliconray, I got my boards in record time and they look great. Not sure how fast I will populate them and see how they work but I am impressed with your quick response and packaging. ( : __________________ I used to be indecisive, but now I'm not so sure.


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16th December 2011, 09:51 AM	#2
gervenja diyAudio Member Join Date: May 2008 Location: Den Haag	Hello Siliconray, I would love to receive a pair of boards. Please let me know what to do. best regards John

16th December 2011, 11:36 AM	#4
andee1310 diyAudio Member Join Date: Nov 2011	If I want to connect it to headphone can I connected to one pcb or two pcb of this JLH Hifi Headphone Amp....?

6th January 2012, 08:45 AM	#8
siliconray diyAudio Member Join Date: Sep 2011	Great...looking forward to see your finished boards and testing result. Don't forget to adjust the static output voltage to 0 before connect headphone __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

6th January 2012, 11:37 AM	#9
gervenja diyAudio Member Join Date: May 2008 Location: Den Haag	Received my boards from the post office today, they have been there for over a week. Very nice boards, very fast shipping. Thanks John

22nd January 2012, 06:20 PM	#10
RS232 diyAudio Member Join Date: Jan 2006 Location: Swindon	Thanks for the fast shipping I have 2 questions The first is the value of R10 ? The second one is: do the BC550/560 need to be matched ? Many thanks Ric

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