พึ่งมาสนใจพวก dac/amp ,amp ไม่ค่อยมีความรู้ทางด้านนี้ค่ะ

ใช้กับโทรศัพท์ note 8 หูฟัง in-ear ทั่วไปพวก zero audio duoza

ส่วนมากไฟล์เพลงที่ใช้จะเป็น lossless flac

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> Wireless sound quality improves with a clear sound image and sufficient output. 
In the DAC, the amplifier section, ES9118 made by ESS made Hi-Fi grade with reputation faithful to the original sound is mounted. By controlling the clock from the wirelessly transmitted input signal side, suppressing jitter realizes a clear sound quality with high transparency. In addition, we adopt aluminum housing for the body and suppress unnecessary resonance.> 50 mW + 50 mW high output headphone amplifier. 
   Pull out the potential of the connected headphones.> LDAC / aptX / AAC correspondence. 
   It corresponds to audio codec that realizes high quality data transmission.> Output resistance value mode switch. 
   Output resistance can be selected according to the driver characteristics.> 32 step multistage digital volume. 
   Adjustable delicately up to the volume level sticking to each song.> LED indicator to indicate operating status. 
   Displays the codec being connected and remaining battery power.> Adopted aluminum housing to suppress unnecessary resonance.   Up to 8 hours continuous playback is possible
ข้อมูลเพิ่มเติม https://www.audio-technica.co.jp/atj/show_model.php?modelId=2967
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