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The regular Meizu (which I bought and donated for Amir to test btw) had something very wrong going on while measuring here, because when used with a cell phone as source it was most definitely great. See below in 32 ohms close to most IEMs impedances.
@Buckeye Amps@Matias
Matias is right. There's a problem with how Amir hooks up audio dongles to his APx555. Using the unbalanced input results in a strong rise in HF noise:
This messed up almost all of his measurements and does not represent real-world usage.
It can be fixed by either using the balanced input (yes, even with 3.5mm single-ended devices), or by using galvanic isolation between host and dongle, as shown here by WolfX-700 on his APx555: https://www.l7audiolab.com/f/ugreen-usb-dac/
Here are measurements of my Meizu HiFi on a good setup:
i also have the Meizu non pro and i find it an incredible value dongle and super small if this is a concern (same size as the pro i think).
Regarding the measurements of amir there is some discussion with Ivan and JohnYang if i remember well in the review thread. In any case, it is so cheap that is probably worth a "just try and see".
The only inconvinient i see is that it connects directly to the usb of the phone and if you carry it in your pocket... might be better to add a cable in between. Another potential problem is that the cable does not seem made to last years and years... mine is still ok but does not see an intensive use.
@Buckeye Amps@Matias
Matias is right. There's a problem with how Amir hooks up audio dongles to his APx555. Using the unbalanced input results in a strong rise in HF noise: View attachment 185884
This messed up almost all of his measurements and does not represent real-world usage.
It can be fixed by either using the balanced input (yes, even with 3.5mm single-ended devices), or by using galvanic isolation between host and dongle, as shown here by WolfX-700 on his APx555: https://www.l7audiolab.com/f/ugreen-usb-dac/
Here are measurements of my Meizu HiFi on a good setup:
@Buckeye Amps Reviving an old thread.. Does your Helm Bolt suck a lot of juice from your phone? I can only find some "mblu" version of the meizu and not sure how that measures up, so was looking for something else. My Hidizs S9 Pro sucks a lot of power from my phone and the Apple dongle is limited to very low volume when using on an android phone
Meizu HiFi and Meizu HiFi Pro got discontinued and replaced by the mblu HiFi and lifeme HiFi Pro, which use the CX31993 in favor of the CS43131. They measure about as well as the Apple dongles. Not as well as the Meizus.
Here's the power consumption for a bunch of dongles.
As an owner of a non-Pro Meizu with 43131 I am sad there are no alternatives... Nowadays only larger and a lot more powerful and excellent measuring dongles, but no true alternative to this tiny form factor...
As an owner of a non-Pro Meizu with 43131 I am sad there are no alternatives... Nowadays only larger and a lot more powerful and excellent measuring dongles, but no true alternative to this tiny form factor...
Do these measure as well as the original Meizus? I know the CS43131 is an all-in-one DAC chip, but idk, just to be sure they did not manage to ruin something.