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Free-JLH HiFi Headphone Amplifier PCB / Kit

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EzPCB-Nila

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This is a small yet high performance headphone amplifier board. The design is follow JLH-2005 class A amplifier. In this design, BD140 was replaced with BC560 and BD139 replaced with BC550. MJE3055 is used as driver transistor. A small heatsink is enough because 200mA Iq is enough for biasing headphone amplifier. The overall THD is only 0.008% (600Ohm, 1KHz, 0.5Vp-p). When listening with HD600, the high freq is clear, bass is full of engerge. Overall performance is excellent!

Please see the details in the link:
**broken link removed**
dscn8979.jpgdscn8980.jpg
 

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