Considering those of us with a U16 have used other DDC's with an otherwise unchanged system with no issues indicates the U16 has an issue either with its hardware (I don't think so) or that its Windows driver is buggy. The latter seems to make more sense. Gustard needs to work on this more.

As far as I can tell the only issue was the pre-emphasis flag sent if pin 15 wasn't covered. I have no issues with PCM up to 24/192 and double rate DSD.

Can someone please tell me what OSC:INT means on the display?

At this point it's just an annoyance for me. For $300 this thing has no right to sound as good as it does. So I'm willing to put up with some of these quirks. To give you some context, I sold my Sonore Signature Series Rendu last year ($2900 MSRP) and while the sound signature of each of these...

I'm seeing the same exact issues. I also get issues with instability if I change the Volume control in Windows. Normally I have it set to 100, but on rare occasion I'll use the Windows volume control if sound is all of a sudden too loud. It's odd too, because some days I don't have any issues...

Which post is this?

I have 1.61 installed, PSA I2S mode enabled on the U16 and no issues getting sample rates from 44.1 to 192khz, 16 or 24 bit. DSD 64 and 128 work as well. With prior firmwares I used to get odd sounding artifacts (pops and ticks) and now that seems to be gone. I did have to cover pin 15 on my...

Yes, as far as I can tell.

After my first unit stopped working, I was able to send it back and exchange it for a new one. After doing this trick, I was able to remove the pre-emphasis flag the U16 sends my PS Audio Directstream DAC: https://forum.psaudio.com/t/getting-oppo-dsd-output-to-the-direct-stream-dac/2744/102...

My U16 is broken too. It continually power cycles. I've put in an RMA request with Shenzhen Audio but haven't heard back in almost a week. I don't know if it's due to the Chinese New Year or not, but we'll see. Luckily I paid with PayPal so I have some recourse should I receive no response.

Is there anyway you could make the modifications to these files and upload a zip file for us to download? I just want to be sure everything is set properly.

With v1.61 what button(s) are you pressing to switch between I2S output modes?

I haven't spent enough time with the U16 to make any judgement on sound quality over the the Singxer SU-1. But if I decide that it definitely sounds better, I might consider keeping the U16 despite some of these odd software issues. The issue is that you're claiming it works fine but you don't...

When you see that pre-emphasis icon show up on your Directstream's screen that means it recognizes the flag but also that the EQ is being used. This means that there will be a roll off of high frequency audio. While you might not notice it, it's definitely happening when that icon is there.

Its not that files don't play, its that there was odd noise with DSD playback. But that is resolved with ASIO output. WASAPI output with DSD seems broken. Have you tried USB direct from a PC? From your posts it seems your source is an Aries. If you have the chance to, connect a laptop or desktop...

The pre-emphasis issue seems to be reoccuring with components from Gustard. The U12 seems to have the same issue. I hope someone from Gustard reads this thread and will fix it because without the fix, the U16 doesn't actually fully support PS Audio's I2S protocol...

Normally I only use the Directstream's volume control as it is lossless. However for non-critical listening, for things such as YouTube, I don't mind using the software volume control inside Windows. Again though, the Windows driver needs work. Or it is a specific issue with how the U16...

I'm aware that using Windows volume control is less than ideal, but when you're just browsing the internet it's more than fine to use. I use WASAPI or ASIO output when listening to music. You're also wrong about the driver being buggy. I have it installed on three devices and have the same exact...

Okay, so the issues with DSD seem to be resolved if you use the ASIO output option within Foobar or JRiver. DSD with WASAPI output is totally broken with the U16 and a PS Audio Directstream DAC with the 1.4 PSA ROM and current driver. However, I'm still hearing some problems within Windows...

I've already flashed the 1.4 PSA rom onto the U16 and am still experiencing the same issues.

Just got my Gustard U16 today. I'm having some odd quirks with it though. I have a PS Audio Directstream DAC and want to use the I2S port on the U16. I'm getting a pre-emphasis flag with any PCM signal sent to the Directstream DAC. With DSD I'm getting constant artifacts in the sound such as...

I sent them a message and their response says otherwise: So I'll ask again. Does anyone have version firmware 1.39 they could share with me? Thanks

I was hoping to find this firmware as well. If anyone has the file could they email it to me at Seegs108@yahoo.com Thanks!

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Which apps allow for a shared WASAPI mode? I've only ever seen exclusive mode as an option.