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SMSL PO100
- Thread starter DarrylG
- Start date
This was the version I updated too and so far no issues. Their latest driver also fixed the 32bit drop-down in the Driver App, and they have removed the volume slider.
Thank you for the information.
I made a mistake in checking DoP. After the FW update everything worked fine.
As for the Ver information, the display of the previous Ver5.00 is abnormal, and I think that the current Ver 1.02 is the normal value.
Similar setup here. 192khz doesn't give me issues so it could be your unit. Or maybe check that your cable isn't too long since your're probably doing spdif to aes directly?
On another note, I still find it strange that on the fw v1.02 there appear output options far above advertised samplerates/bitdepths, at least on macos.
Same in Windows, you would think they would modify the driver to not show rates higher than it can't do.
Arpeggiator
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Yea, probably the cable length. Same issue with Topping D10B. Thought it would be fine with 8 m overall cable length (110 Ohms) but that seems not to be the case. Strange thing is that the speaker more far away from the source plays fine. Maybe strange reflections.
The question here is what happens when you select them.
I ended up keeping the Topping D10B for overall better quality and also I want to keep volume control.
PO100 of Ver1.02 is displayed up to 44.1~382kHz/16~32bit when you open the properties on Windows.
But actually, it can only output up to 44.1~192kHz/16~24bit.
It seems that such a display is not the output range of OPT / COAX but the range where the USB interface XMOS XU208 can receive the signal.
Same goes for Topping's D10s/D10B. However, since there is a DAC, signals exceeding 192 kHz flow only to the DAC.
In addition, I think that it is natural that the volume panel has disappeared with the new firmware.
The PO100 does not have a DAC and simply converts the USB signal to OPT/COAX and outputs it.
In addition, since DoP signals are also handled, operations that process signals are meaningless.
But actually, it can only output up to 44.1~192kHz/16~24bit.
It seems that such a display is not the output range of OPT / COAX but the range where the USB interface XMOS XU208 can receive the signal.
Same goes for Topping's D10s/D10B. However, since there is a DAC, signals exceeding 192 kHz flow only to the DAC.
In addition, I think that it is natural that the volume panel has disappeared with the new firmware.
The PO100 does not have a DAC and simply converts the USB signal to OPT/COAX and outputs it.
In addition, since DoP signals are also handled, operations that process signals are meaningless.
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actually according to the datasheet, there's 15 steps of dpll setting, but even if you set it to 0, still can't bypass the asrc, asrc bypassing is another setting (datasheet says: 128fs is bypassing asrc)
UltraNearFieldJock
Active Member
Sorry, could anyone answer this perhaps dummy question: Can I use both outputs coax and optic at the same time … to split the digital signal?
staticV3
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@UltraNearFieldJock yes you can.
yes. You can use it.
Now I'm using OPT and COAX at the same time.
This kind of DDC can use multiple outputs simultaneously.
UltraNearFieldJock
Active Member
Thank you! I supposed so - there are also some cheap optical toslink splitter to bay, but no one coax splitter to find. I will buy one PO100 and check it in the practice. I had not good experiences with optical toslink, but with coax much better.
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I have both inputs plugged into an Anthem MRX740 and it works as advertised after the firmware update.
salmoooon
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Hi everyone here, I recently got a PO100 to output a Toslink signal from a Windows 11 PC to my soundbar.
On one of the PCs, it works just fine, but on the other, all the subtle sounds were cut off, when using the Windows built-in "sound test" feature, the start of the left channel test sound was cut off as well.
I've tried the 1.02 firmware and the drive on the site but the issue still persists, I have no experience with Toslink so I don't know if this is a common issue or a specific one to this product. Does anyone else have this issue?
On one of the PCs, it works just fine, but on the other, all the subtle sounds were cut off, when using the Windows built-in "sound test" feature, the start of the left channel test sound was cut off as well.
I've tried the 1.02 firmware and the drive on the site but the issue still persists, I have no experience with Toslink so I don't know if this is a common issue or a specific one to this product. Does anyone else have this issue?
Of the two Windows PCs, one works fine, so I think the cause is the second PC.
I assume your PC has multiple USB ports, have you tried other USB ports?
Possible causes include problems with the power supply capability of the second PC's USB port and problems with the signal quality (noise, etc.) of the USB port.
My PO100 works fine on both Windows 10 and Windows 11 PCs.
My PO100 is working stably in any of the modes below. (PCM44.1~192kHz & DoP64)
Use in ASIO mode with SMSL's ASIO driver
Use in WASAPI mode
Use with Windows Audio System (44.1kHz)
However, if you open "Properties" of "SMSL USB DAC" of PO100 from "Sound" of "Windows Audio System" and perform "Test" of output from "Details", continuous noise of about 1 second interval only when 96kHz is selected was found to occur.
The test tone is output normally from each speaker of R/L, but it is accompanied by noise. This symptom is the same for both OPT and COAX.
If you play music with the 96kHz setting, the noise disappears and you can play normally.
This symptom occurs only when PO100 is connected, but I don't know where the cause is.
It's a very strange phenomenon. Well, there is no problem to actually play music.
Apparently, it isn't working because Amazon Music's sample rate is 192K and my DSP cannot take this. Booo.
tonimccloud
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It seems that smsl will sell a new version of smsl po100. aoshida told me about that, but not the launch date
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