I have a PO100 Pro which works well. However, for the MQA decoding, it only outputs 88.2 and 96k despite what the indicator light says (which is usually higher the the two sample rates it ends up outputting). Has anyone else experienced this?
-
Welcome to ASR. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!
S.M.S.L PO100, PO100 PRO & PO100 AK - Measurements (Digital Interfaces & DAC)
- Thread starter VintageFlanker
- Start date
Roland68
Major Contributor
That is absolutely correct.
The PO100 Pro is only a DDC and can therefore only function as an MQA core decoder for the first unfolding, i.e. from 44.1 or 48 kHz to 88.2 or 96 kHz.
The rest is unfolded in the DAC, assuming that it is also MQA capable.
Roland68
Major Contributor
No, the same technology that is in the PO100 and Pro is also installed in the MDA1.
But the MDA1 is probably a little better/more complex, has its own power supply and not via USB, etc.
But if you have a problem with USB, you can get galvanic isolation from the USB connection via the PO100 (Pro) with the optical connection.
OP
- Thread Starter
- #345
Nope. But I'm not sure how this would be useful (if connecting a streamer via USB output?)
AlSpring
Member
- Joined
- Feb 22, 2025
- Messages
- 23
- Likes
- 3
I want to connect my phone via usb if the sound is worse via bluetooth.
OP
- Thread Starter
- #347
You could connect your phone straight to the MDA1 as well. Unless you also need the USB input for your PC ?
AlSpring
Member
- Joined
- Feb 22, 2025
- Messages
- 23
- Likes
- 3
I have also a laptop that has only usb outputs. In fact, the PO100 is also a DAC, so it turns out that there will be two DACs or not?
Roland68
Major Contributor
The PO100 is only a DDC (digital-digital converter), not a DAC.
OP
- Thread Starter
- #350
Only the PO100 AK is. The rest of the line is USB to S/PDIF converters.
I would need a USB to optical and SMSL interface seems to be of good quality.
However, the PO100 model appears to use a single oscillator that implies use of PLL or ASRC for the missing frequencies family.
It's ok for costs saving, but technically I don't think it's SOTA.
I understand that the measurements here are downstream of the E70 topping, so the measured jitter performance is not purely the PO100 ones.
Does anyone know which family is the oscillator mounted on the PO100 and/or has measured the actual jitter?
However, the PO100 model appears to use a single oscillator that implies use of PLL or ASRC for the missing frequencies family.
It's ok for costs saving, but technically I don't think it's SOTA.
I understand that the measurements here are downstream of the E70 topping, so the measured jitter performance is not purely the PO100 ones.
Does anyone know which family is the oscillator mounted on the PO100 and/or has measured the actual jitter?
Roland68
Major Contributor
Take a look at the first page of the thread.
I have read, but I cannot find answers to my questions. That's why I have posted
Roland68
Major Contributor
Jitter measurements are also included.
Alternatively, you can take a look at the PO100 Pro.
There are significantly more sophisticated interfaces from Singxer, Gustard, and others, but they're in the price range of perfectly measured DACs, such as the DO400, D400 ES, RAW Pro-DAC1, and Loxjie D40 Pro.
Yes, the Pro seems to use 3 oscillators, with the third one supposedly at 24MHz for HDMI. Technically it seems more correct, but before spending more I would like certain what the PO100 does.
In any case, the jitter measurements on the first page I understand that they are made on the output of the Topping E70 fed by the PO100. In this case, they are not (fully) indicative of the jitter of the PO100, but mostly of the suppression of E70.
If I misunderstand, correct me...
Roland68
Major Contributor
The PO100 Pro does not have HDMI but outputs I2S over LVDS via the HDMI connector.
Fahzz
Addicted to Fun and Learning
Vintage Flanker:
Thanks for the review. I was looking for a device like this, and it was an easy decision to order a PO100 because of your efforts.
Thanks for the review. I was looking for a device like this, and it was an easy decision to order a PO100 because of your efforts.
randomusername
Member
- Joined
- Jan 8, 2021
- Messages
- 48
- Likes
- 46
do you know of a device like po100 but with an optical spdif input or hdmi input in addition to USB? The PO100 works well with my PC, but now i want to connect my TV to the same device as well as PC
tmtomh
Major Contributor
- Joined
- Aug 14, 2018
- Messages
- 3,255
- Likes
- 9,763
Very good question. There have been a couple of threads on this, and the short answer is that this is sort of a hole in the market: such devices are available, but they are more expensive devices that include additional functionality.
Why no inexpensive multi-input digital interface?
I assume the answer here is "market reasons," but given the near-endless variety of digital interfaces and DACs out there, I have a hard time believing that. What I'm talking about is an inexpensive device that is a sort of merger of an SMSL PO100 (or PO100 Pro, doesn't matter in this...
www.audiosciencereview.com
Digital format converters with multiple inputs - am I missing anything on the market?
I know there are lots of discussions about devices like USB to AES converters, but I'm wondering about something slightly more complex: I have two digital sources, one coaxial and one USB. And I'm looking for the simplest, most economical way of feeding both to active speakers with AES EBU...
www.audiosciencereview.com
Roland68
Major Contributor
SMSL PO100AK, PS200, SU-1, C100, DO100 Pro HDMI ARK……
Similar threads
