goodvibes
Headphoneus Supremus
- Joined
- Dec 28, 2009
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If you load the page in the Chrome browser it will ask if you would like the page translated. The page referred to is a firmware update info page. The DX90J page is located at http://www.hibino-intersound.co.jp/ibasso_audio/4079.html. Seems that the main difference is higher silver content solder, andES9018K2M digital section chips, and in the amp section Texas Instrument OPA1611.
Same as stock except for the solder and possibly some voicing and battery.