Luxsin X9 Desktop DAC & Headphone Amplifier Officially Released !

[Keko123]

Are the USB inputs isolated?

Thanks

 

[ObjectiveSubjectivist]

Cool device, I might consider switching from my RME

 

[Machine 13]

This looks like a great DAC/Amp all-in-one for head-fi. I'm resisting the "trigger finger" for the moment, but feel like I'll probably get one when available.

I have a question though, I have a strong preference for XLR headphone connections just for the "solidity" of them. I understand from a previous post the impedence detection is not possible through an XLR connector. It looks from demo videos like the gain is set automatically for the SE and 4.4mm connectors by the impedence detection; how is gain control/selection handled for XLR? I presume it's manual via the control panel? Or does the X9 handle it automatically somehow?

 

[mrk]

This looks like a great DAC/Amp all-in-one for head-fi. I'm resisting the "trigger finger" for the moment, but feel like I'll probably get one when available.

I have a question though, I have a strong preference for XLR headphone connections just for the "solidity" of them. I understand from a previous post the impedence detection is not possible through an XLR connector. It looks from demo videos like the gain is set automatically for the SE and 4.4mm connectors by the impedence detection; how is gain control/selection handled for XLR? I presume it's manual via the control panel? Or does the X9 handle it automatically somehow?

That's right yes it's a simple case of swipe left on the screen, tap Audio Setting then tap Headphone gain to manually select the gain. You can also manually tap "redetect" in that screen which then runs an auto check for impedance. It's just the auto-sensing system doesn't exist for XLR.

 

[Machine 13]

That's right yes it's a simple case of swipe left on the screen, tap Audio Setting then tap Headphone gain to manually select the gain. You can also manually tap "redetect" in that screen which then runs an auto check for impedance. It's just the auto-sensing system doesn't exist for XLR.

Ah - that's great! Thanks so much! I misunderstood that XLR did not facilitate impedance detection by the X9 at all; it's just a matter of the x9 doing it *automatically* when the HP is plugged in that is not possible. Again, thanks for your helpful reply!

 

[SidneyGrenier]

Looks awesome, keen to hear more thoughts soon!

 

[Keko123]

Are the USB inputs isolated?

Thanks

Would TOPPING HS02 be a good option?

 

[Machine 13]

That's right yes it's a simple case of swipe left on the screen, tap Audio Setting then tap Headphone gain to manually select the gain. You can also manually tap "redetect" in that screen which then runs an auto check for impedance. It's just the auto-sensing system doesn't exist for XLR.

One more question about the impedance detection - I see from your demonstration video that the manual gain level choices look like they correspond with general impedance values (16, 32, 300 ohm, respectively) - I assume these are rough guidelines for the user, of course. Does the impedance detection always produce a result of either 16, 32 or 300 ohms (basically for the sake of getting it in the correct gain mode of the three options) as it does in your demo above? Or is the auto impedance detection more nuanced than that and your demonstration just happened to be with a 32 ohm HP?

 

[TRHH]

Would TOPPING HS02 be a good option?

Have a look here:

https://www.audiosciencereview.com/...ynapse-neutron-v1-usb-isolators-review.59111/

 

[LarsNL]

Have a look here:

https://www.audiosciencereview.com/...ynapse-neutron-v1-usb-isolators-review.59111/

I have that Synapse with my JDS Element IV, it works. However, very curious about the X9, maybe will upgrade soon. Depends on the reviews that soon should come out, as most dealers start selling the X9 starting next week.

 

[mrk]

One more question about the impedance detection - I see from your demonstration video that the manual gain level choices look like they correspond with general impedance values (16, 32, 300 ohm, respectively) - I assume these are rough guidelines for the user, of course. Does the impedance detection always produce a result of either 16, 32 or 300 ohms (basically for the sake of getting it in the correct gain mode of the three options) as it does in your demo above? Or is the auto impedance detection more nuanced than that and your demonstration just happened to be with a 32 ohm HP?

Hmm not actually sure as I don't have any other headphones that are outside of those general impedance ratings I'm afraid but from what I understand these values shown would typically correspond with the gain mode found on other amps, so low, middle high, which makes logical sense based on the sensitivity of the headphones on paper and as detected. I will have the LCD-5 soon though so will be able to confirm then as they are non-standard rated at 14 ohms.

 

[Luxsin]

Hmm not actually sure as I don't have any other headphones that are outside of those general impedance ratings I'm afraid but from what I understand these values shown would typically correspond with the gain mode found on other amps, so low, middle high, which makes logical sense based on the sensitivity of the headphones on paper and as detected. I will have the LCD-5 soon though so will be able to confirm then as they are non-standard rated at 14 ohms.

For the X9’s impedance detection, we have currently set 9 impedance ranges to work with our three gain modes, which should cover the majority of headphone impedance values. After detection, the X9 will display the value corresponding to the closest matching range.
For example, 14 ohms headphone will be displayed as 16 ohms.

Luxsin

 

[Keko123]

Are the USB inputs isolated?

Thanks

@Luxsin Can you confirm this?

Best regards

 

[Luxsin]

Are the USB inputs isolated?

Thanks

I assume you’re asking whether the X9 has USB signal isolation system. The X9 does not include a USB isolation system in the final version.

In early engineering prototypes, we did implement a USB isolation system by using an Opto-isolator chip, which able to block circuit noise introduced via the USB connection. However, we found that this approach introduced lower USB transfer speed and potential USB compatibility issues, so we decided to drop it.

Instead, we took a different approach to ensure clean USB signal integrity:
- The X9 cuts off USB bus power from the start, using only the data lines to avoid noise or coloration from USB power.
- X9 also uses two femtosecond clocks to maintain precise signal synchronization.

Overall, we believe this approach delivers better result compared to the additional Opto-isolator chip solution.

Hope this helps clarify.

Luxsin

 

[cans or bust]

Audio advice and many other dealers, they will update shopping link later.

Hello, I am in the USA and reached out to Audio Advice on 6-9-25. This was their response: "Thanks for reaching out. Unfortunately we're not currently a Luxsin dealer. It's possible in the future with them being under the same umbrella as Eversolo, but nothing in the near future that I'm aware of."