It has been a while I am not posting anything in this blog. This is because of my main job schedule is very tight, so I cannot even manage this blog at all. But thankfully I am still having my routine music listening session, probably a few hours a week, with the current audio setup is using the low cost AD1865NK DAC, the LM3875 Gainclone amplifier and SB-acoustic 2-way speaker system. For the digital player is iBasso DX-90 which I have used for very long time.
I am curious what is inside this tiny media player and I have an opportunity to open it up now.
To open this tiny device is easy. But the process needs attention for the small ribbon cable that attach between the top screen cover with the frame.
First things first, I remove the battery cover and 7 bolts underneath.
Then I am using the guitar pick to lift the plastic frame detach from the screen casing.
The next step is to remove the PCB from the screen body. There are 2 bolts need to remove first then I need to double check for the cables attached with the socket from the screen to the PCB. The socket need to lift-up gently to avoid any damage.
The PCB design is very neat, with many components inside, I really love to see highly regarded engineering design in this portable device.
I can see dual ESS 9018K2M with many audio grade op-amps such as OPA1611 and BUF634.
I see they are using Nichicon FW capacitors for power supply filters. They are 4 pcs 22uf/50v and 2 pcs 470uF/10v which are okay and doesn't need to replace, but since I had the 22uf Elna Silmic, I did it anyway.
It won't affect the sound quality especially if I only use it as digital transport.
It is all I can share for the internal iBasso DX-90. Such a neat design and lots of high-grade audio components.
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