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

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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!

An externally hosted image should be here but it was not working when we last tested it.


An externally hosted image should be here but it was not working when we last tested it.


An externally hosted image should be here but it was not working when we last tested it.


An externally hosted image should be here but it was not working when we last tested it.
 
Hello Serial Port

Sorry for missing the value of R10. 0.33 or 0.51 Ohm is OK.
I think no harm to use matched BC550/560, but I tried both matched/unmatched, I couldn't find difference by either instrument or my ears.

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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