I have the Topping D90SE. I previously asked if anyone had downloaded the V1.87 firmware update. So far, no response. This is what is shown on the Topping website regarding this:
D90SE version V1.87 firmware update
This firmware is only for D90SE and is
NOT applicable to any other models. If this firmware is flashed to other models, it will immediately cause the product to be unusable and unable to repair by yourself. If the firmware of your D90SE is already V1.87, then your D90SE needn't this update.
The firmware version of your D90SE could be check at this tool.
What's updated:
1. Added sound simulation function for Valve sound & Transistor sound.
2. Added channel balance setting within 10dB in 0.5dB steps.
3. Fixed the display issue of playing MQA in version V1.86.
Firmware and tools for Windows: Download
here (This update requires a Windows 10 or higher OS with V4.82 or higher drivers installed. Drivers could be download
here).
Firmware and tools for MAC: Download
here
If you have questions about the update of your D90SE, please contact us before updating this firmware.
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The reason I am posting here is because there is a discussion regarding the Valve sound and Transistor sound. I don't even know if my unit already has this update, and don't know how to check to see if I have it. Are the Valve and Transistor sounds on separate filters? I was reading amirs review of this unit and he mentioned that Filter #7 might be the preferred filter. Another review mentioned that Filter #5 would be preferable. I suppose this is all subjective, of course. But would someone in this particular forum be kind enough to let me know how to access the two simulation functions, and to find out if this particular update is already built into the unit? Thanks for any response.