Topping D90SE Review (Balanced DAC)

[JohnYang1997]

@JohnYang1997, I think, your proposal with a more complex sequence or other suggestions above, all sounds reasonable. The main thing is, that you can provide a fix by a firmware which we are able to download and update our device. Can you do it?

After discussion, this has not been reported since 2019. So maybe we can just give you a customized firmware without the sequence (reset can still be done in system setting), which itself is to reset the unit after testings.

 

[Lupin]

I think you triggered system reset which is USB input, mute, turn off.

Just out of curiosity..
Is this isolated to the D90SE or is this the reset sequence for more Topping DACs?

 

[JohnYang1997]

Just out of curiosity..
Is this isolated to the D90SE or is this the reset sequence for more Topping DACs?

Pretty much all of them. At least since dx7pro or something. Usb input - mute - turn off will give you factory reset. But some models have -30dB as default level. This is not a bug, it's just some factory function.

 

[nhs]

After discussion, this has not been reported since 2019. So maybe we can just give you a customized firmware without the sequence (reset can still be done in system setting), which itself is to reset the unit after testings.

Thank you, it may be a workaround for me but I see some coming problems below.

• What if next official firmware were released but the reset sequence won't be changed.
• Of course I trust you but an unofficial customized firmware may be not well tested and might cause other side effects.

Therefore I think, it is better if you will release an official firmware. It is ok for me if I know Topping will change the reset sequence next firmware soon.

 

[PatentLawyer]

What filter have you guys been using? I've been using 5 but a lot of people seem to like 7. I never heard of a minimum correct fast filter before.

7.

 

[b4nt]

Pretty much all of them. At least since dx7pro or something. Usb input - mute - turn off will give you factory reset. But some models have -30dB as default level. This is not a bug, it's just some factory function.

I've a D50s, my desktop PC speakers being at 1m from my ears, my amp is a 2x100W model, speakers in the same range. This was of the first things I had checked, what the volume is at startup

Don't know what that process could be for D50s. Now tested:
- mute then power off from front button: volume keeps stored
- mute then 5V external power cutoff: volume keeps stored

Did the same with a track playing, volume remained stored.

 

[nhs]

I've a D50s, my desktop PC speakers being at 1m from my ears, my amp is a 2x100W model, speakers in the same range. This was of the first things I had checked, what the volume is at startup

Don't know what that process could be for D50s. Now tested:
- mute then power off from front button: volume keeps stored
- mute then 5V external power cutoff: volume keeps stored

Did the same with a track playing, volume remained stored.

Did you set USB as input channel?
If not repeat it again with usb input please.

 

[b4nt]

Did you set USB as input channel?
If not repeat it again with usb input please.

I had USB "input" for both tests. Especially for my second attempts, with a track playing.

On my setup, 5V USB remains always on, my PC never shuts 5V USB. And this PC is always on (OS active, PC having played sounds).

 

[nhs]

I had USB "input" for both tests. Especially for my second attempts, with a track playing.

On my setup, 5V USB remains always on, my PC never shuts 5V USB. And this PC is always on (OS active, PC having played sounds).

Thank you, then what @JohnYang1997 said above is not correct. He said "pretty much all of them", what does that means?
The D90SE definitely reset the settings if switched off while the device is muted and has usb input active.

 

[Lupin]

Thank you, then what @JohnYang1997 said above is not correct. He said "pretty much all of them", what does that means?
The D90SE definitely reset the settings if switched off while the device is muted and has usb input active.

Why would it not be correct what he said?

"Pretty much all of them" is not all of them, apparently the D50s is excluded.
He also said DX7Pro and newer. D50s was released before the DX7Pro so that would also be in line with what he said..

 

[nhs]

Why would it not be correct what he said?

"Pretty much all of them" is not all of them, apparently the D50s is excluded.
He also said DX7Pro and newer. D50s was released before the DX7Pro so that would also be in line with what he said..

Sorry but I don't know the devices history of Topping. What John said lead to misunderstanding, at least I understood so, he meant almost devices do that.

 

[b4nt]

"Pretty much all of them" is not all of them, apparently the D50s is excluded.

And I'm happy so. At full 2x100W I would get blown away from my desk

It was also as an example, as such a setup might be critical with a D90se.

 

[nhs]

And I'm happy so. At full 2x100W I would get blown away from my desk

It was also as an example, as such a setup might be critical with a D90se.

You can imagine what a explosion I have encountered. My amp could deliver 2x250 Watt @4 Ohm.

 

[sq225917]

Measure the output.

That's fine if you want to see if the dac is affected by its own smps, but what about the effect on the smps on other components in the chain?

Pre reg changes in Europe very few bits of kit came with an filtered inlet, if you're mixing old and new you may have to look wider than just the DUT. I'm not suggesting the advise smps is leaky buy many were.

 

[JohnYang1997]

You can imagine what a explosion I have encountered. My amp could deliver 2x250 Watt @4 Ohm.

BTW have you got your IR codes?

 

[b4nt]

BTW have you got your IR codes?

You mean IR / remote control codes? Had no time to test, I think it is a NEC protocol

https://www.audiosciencereview.com/...emote-for-topping-dx7.2334/page-4#post-816009
https://github.com/irplus-remote/irplus-codes.github.io/issues/379

 

[nhs]

BTW have you got your IR codes?

Hi John, thank you for asking that. Yes, after I posted here I have received the IR codes from Toppings support. Did you intervene in that?

 

[JohnYang1997]

Hi John, thank you for asking that. Yes, after I posted here I have received the IR codes from Toppings support. Did you intervene in that?

A little bit. We do normally give the IR codes per request. So you could get the codes regardless if I didn't say anything.

 

[ShiZo]

Has anyone experimented with the 4v vs 5v modes?

 

[nagster]

Has anyone experimented with the 4v vs 5v modes?

https://www.audiosciencereview.com/...vel-measurements-balanced-usb-dac-png.135764/