---------------------------------------------------
Topping Technology Co., Ltd

https://www.toppingaudio.com/

Tel: +86-20-37219489
---------------------------------------------------
D900 Firmware
Changelog
---------------------------------------------------
---------------------------------------------------
V1.38 (November 18, 2025)

*Fixed:When in standby mode, it fails to automatically jump to the input that activates it after receiving an input.
*Fixed: After enabling high - sample - rate mute, adjusting the right - channel gain will cause a momentary mute.
*Fixed:When the volume follows the input, the volume is incorrect after power - on following standby.

---------------------------------------------------
---------------------------------------------------
V1.36 (November 3, 2025)

*Fixed: Audio distortion when playing some DSD - format audio files.

---------------------------------------------------
---------------------------------------------------
V1.35 (October 30th, 2025)
*Adjustment: Adapt to Tune software with a version higher than V1.07, and be able to adjust the gain by 0.1dB.
*Fixed: PEQ not following the output.
*Fixed: IIS DSD channel - swapping.
*Fixed: Several other known issues.

---------------------------------------------------
---------------------------------------------------
V1.31 (September 10th, 2025)

*Fixed: Abnormal PEQ data caused by frequent C1/C2 switching.
*Fixed: Incorrect input signal during automatic standby - wake - up.
*Fixed: Occasional audio distortion when switching PEQ configurations.
*Fixed: Several other known issues.

---------------------------------------------------
---------------------------------------------------
V1.29 (August 13th, 2025)

*Optimization: There was a popping sound when switching from 176.4 to DSD64/128.
*Fixed: There was a popping sound when PEQ switches to the local configuration.
*Fixed: The "UNLOCK" on the FFT interface was displayed as "UNLOC+".
*Fixed: Entering DFU, then power - off and restart, would restore the factory settings.
*Fixed: The parameters were not saved after power - off when standby and power - on after adjusting parameters.
*Fixed: Several other known issues.

---------------------------------------------------
---------------------------------------------------
V1.20 (July 23, 2025)

* Adjustment: Long-pressing the brightness button on the remote now clears the Bluetooth list instead of switching to the home screen
* Adjustment: C1 and C2 now save all system parameter configurations
* Adjustment: The 5 system preset PEQs can now be modified (parameters and names) or deleted via Tune
* Adjustment: EQ menu now shows both index and name instead of index only
* New: Added PEQ disable reminder when connected to the control software
* New: Option to retain PEQ settings when performing a factory reset
* New: In the FFT interface, volume adjustment, input/output switching will display large font info for 3 seconds before returning to the normal screen
* Fixed: Line out did not display sampling rate, only volume
* Fixed: 4V/5V switching not working properly
* Fixed: Several other known issues

---------------------------------------------------
---------------------------------------------------
V1.12  (June 13, 2025)
---------------------------------------------------

* Initial version

---------------------------------------------------