[Sonywalkmanuser]

I won’t recommend using Samsung Gan chargers if you value your Walkman’s battery lifespan. It has too much ripple, most other chargers are under 100mv, typically 40mv and the best ones around 20mv.

 

[Sonywalkmanuser]

Mine is a Jap unit. How do I check if it's the international version?

You will have the Google play store if it’s the Japanese or international version.

 

[The1Signature]

I won’t recommend using Samsung Gan chargers if you value your Walkman’s battery lifespan. It has too much ripple, most other chargers are under 100mv, typically 40mv and the best ones around 20mv.

 

[The1Signature]

So which charger is the best?

 

[Sonywalkmanuser]

So which charger is the best?

Not exactly sure. I don’t think there’s one charger that can be the best at everything if you factor in cost. Just avoid Samsung.

Too many variables and standards for usb charging:

https://training.ti.com/sites/defau...siderations for USB type C Power Delivery.pdf

https://www.usb.org/sites/default/files/D2T2-1 - USB Power Delivery.pdf

 

[Sonywalkmanuser]

So far my best guess:
Most Apple chargers can be good but costly
Sony Xperia chargers are good but can be difficult to find
Anker chargers are good but very costly
Baseus is cheap, good performing but customer service reputation is not great
Ugreen seems very low ripple but there is controversy about its (lack of) UL certification
Spigen claims it’s chargers are designed with low ripple in mind but offers no data
Samsung has crappy ripple performance
Aukey is noisy. They got banned by Amazon for faking reviews
Xiaomi is good and cheap too.

 

[emili0]

hi coming from an apple iPhone. In the tidal app in iOS when you go to the search function a 360 reality audio, Atmos, and MQA section pops up. But in this DAP you need to manually input 360, Atmos, Masters for the respective section to pop up. My question is, does the tidal app in the WM1ZM2 not support 360 reality audio and Masters, etc? Do those features only work for the native music app?

 

[Sonywalkmanuser]

If you have a lot of spare time to check out chargers…
https://lygte-info.dk/info/indexUSB UK.html

 

[Sonywalkmanuser]

For ripple performance, I think this is likely top of the pack:
https://lygte-info.dk/review/USBpower Xiaomi Mi 60W Fast+QC+PD usb charger CDQ06ZM UK.html

 

[mhaapl]

I bought this 30w Sony charger, no complaints so far.
https://www.mobilefun.co.uk/official-sony-30w-fast-mains-charger-1m-usb-c-cable-uk-black-85498

 

[Liono]

I normally use my 20000mah battery pack as a charger proxy.. in effect minimise ls issue with mains to 5v conversion. Or use wall socket USB sockets. Having had my daughters multi usb mains charger go wrong, l and taken it apart they aren't built very well at all.

 

[FreeTime]

yeah, that's the main reasons i have been holding on this unit for months, i was thinking maybe aac lower res file needs more DSEE power to upscale, hence increasing the power usage. I will try the Direct mode method on the next full charge.

Btw, DSEE Ultimate really upscales aac files like champ, it was as close as a FLAC file.

I did an update database and hour ago, looks better, 5% per hour now, i will keep monitoring. Will report back the next full charge using Direct mode.

I just tried Direct mode playback and yeah, it run about 30 hours from battery 100% to 20%. Battery looks fine.

Apologized for the confusion as this is my first time using Direct mode for long hours as most of my files are aac 256, which i use DSEE most of time.

 

[ttt123]

For ripple performance, I think this is likely top of the pack:
https://lygte-info.dk/review/USBpower Xiaomi Mi 60W Fast+QC+PD usb charger CDQ06ZM UK.html

I have 2 of these, and always like the Xiaomi products. Good to know this is a good one to use, with low ripple, if charging and playing music at the same time. Though I use a 65W GaN charger most of the time for fast charging convenience on the Ipad. (and Sony)

 

[maceto]

For ripple performance, I think this is likely top of the pack:
https://lygte-info.dk/review/USBpower Xiaomi Mi 60W Fast+QC+PD usb charger CDQ06ZM UK.html

https://ifi-audio.com/products/ipowerx/ curious about their products. They have a couple

 

[ttt123]

I normally use my 20000mah battery pack as a charger proxy.. in effect minimise ls issue with mains to 5v conversion. Or use wall socket USB sockets. Having had my daughters multi usb mains charger go wrong, l and taken it apart they aren't built very well at all.

A battery may not always a better option. I had thought the same, that a battery was a good replacement for an AC power source, as I thought of it as similar to using a car battery. Simpler and more direct. Just a battery, with no complications. But this is not the case.
- lithium batteries are 3.7V, so they need a miniature switching converter on a chip to boost the 3.7V to 5V. Switching converters operate at very high voltages, which are sampled/filtered to get the lower voltages needed for the DC output.
This is an explanation of a 3.7V to 5V boost converter - https://theorycircuit.com/3-7v-to-5v-boost-converter/
- if the battery pack has QC or PD output capability, then it needs a more complex boost circuit that can boost to 5, 9, 12, 15, 20 Volts, and at high current of 3-5Amp (for a 65W charger)

So the same issues apply to battery packs, as with AC powered power supplies.
- Need good quality battery cells (an additional complication) and good quality converter circuit. These are hard to tell, as there is little information on them. We can just use the price and brand reputation as a guide.
- The high current converter circuit in a battery pack, adds space, and heat dissipation problems.

So after realizing that battery packs have the same issues as an AC power supply, and some additional problems, I am no longer confident that a battery pack is a superior solution, IN ALL CASES.
- It can be a good choice, if the battery pack has high grade cells, quality converter and control circuit, and good heat dissipation. But this may not be easy to get, or guarantee.
I just now remember my experiences with the Ibasso DX90, which used replaceable Samsung phone batteries. It was found that the Japanese, and Korea cells sounded the best. Due to better cells, and/or better converter/control electronics? In fact, I still have 3-4 Japan produced batteries lying around from those days.
- Battery packs do not use AC as a source, so that can be an advantage, as AC noise is harder to filter out. This is one big advantage for batteries.

So:
- Get a high quality AC charger. Don't skimp on this, and expect to pay more for quality. Cheap chargers have to save money on the quality of components, and design/construction.
- GaN chargers are more efficient, and run cooler, so theoretically, they should be better. Though this needs test results to verify. And of course there will be higher quality, and lower quality/price offerings on the market.
- battery packs are not a perfect solution, but can be superior in having lower noise than AC power supplies, for some applications.