When it comes to Lyman''''''''s ear, I believe that no one knows the enthusiasts playing headphones. The famous HD650 headphones are recommended to use Leman earbage to promote it, which can make the HD650''''''''s headset performance extremely //. The Lyman Acet Line is a classic in the headset amplifier. The bass is strong and powerful, the middle sound is round and full, the tweeter is slim and the ear, and the OPA2134 is made of OPA2134.NoOften suitable for listening to more emotional music, which is well received by many headset enthusiasts.
OPA2134/BC550/BC560/D139/D140 percentOPA2134 is divided into two versions of Thailand and Malaysia. The sound quality is exactly the same."PHILS" "MALAYSIA"Anti -counterfeit words; BC550/BC560 is a special audio triode Philips. Note that there are many fakes of this triode.The BC550/BC560 sold by our store is the original PhilipsEdited/edited/compiled/compiled(I want to say three times); D139/D140 is a Fairy brand made of Malaysia. It is exactly the same as that of the original machine. Some enthusiasts use ON or Philips to replace, and the sound quality will be discounted.
A full set of loose parts:
All components on PCB+board. The PCB is a Double Panel of the FR4 military worker, and the copper thickness is 2OZ. All components are original genuine goods.
The finished board has been welded:
All components on the PCB board have been welded and tested well, and power can be worked normally.
PCB empty board:
FR-4 military workers double-sided glass fiber plate, 1.6mm thick, 2oz thickness, and tin-plated pads.
Lyman ear placed into a grade boardLehman earlier PCB empty boardRyanel''''''''s reference schematic diagramPCB bit number diagramLyman ear drop BOM order