[Nooborghini]

Which albums would you play if the M15 could ?

Albums such as this but I would probably just want this done via USB- just curious how it would sound on the device, native.
https://www.nativedsd.com/albums/LWC1189-schumann-piano-quintet-op-44-and-piano-quartet-op-47

You can easily try it by:

- Connect your M15 to your computer as a USB DAC
- Either download the https://samplerateconverter.com/ and convert a very well recorded album to DSD512, and play it using foobar2000 (I haven't tried using the foobar2000 but played through HQPlayer). EDIT: https://www.sony.com/electronics/support/articles/00075146
- Or download the HQPlayer (https://www.signalyst.com/consumer.html) and use real-time DSD512 conversion
- In both cases play through M15 and check if you hear any difference.
- If you like, repeat it with DSD256 which should not be any different from DSD512

You can also try hard to find a DSD512 album and its DSD256 version and maybe also its FLAC version - and compare them all by playing on your computer with M15 in USB DAC mode.

My conclusion was, DSD512 is simply not needed on M15.

I was just curious on how it would sound, I would consider using it as a USB DAC- it just crossed my mind if I wanted this in my living room instead of having to set this up at my desktop and move files around etc.

I was actually going through this exact setup as I found out that it wouldn't read the 512 native! haha thank you!

 

[jmills8]

Albums such as this but I would probably just want this done via USB- just curious how it would sound on the device, native.
https://www.nativedsd.com/albums/LWC1189-schumann-piano-quintet-op-44-and-piano-quartet-op-47



I was just curious on how it would sound, I would consider using it as a USB DAC- it just crossed my mind if I wanted this in my living room instead of having to set this up at my desktop and move files around etc.

I was actually going through this exact setup as I found out that it wouldn't read the 512 native! haha thank you!

 

[bflat]

Yes, M15 has two femto clocks, but they're for the AK4499 DAC chips, while the XMOS uses another cheap clock that's not femto. I believe most USB DACs are in async mode on the market, according the hypes of W4S Recovery re-clocker, it would add benefit to all USB DACs.

Again, I'm not questioning you hearing improvements, but you continue to make technically false comments. Jitter effect only happens during the digital to analog conversion (or A to D). XMOS is purely a digital to digital converter so zero impact of jitter. Only the DAC chips inside the M15 convert digital to analog so jitter effect creates distortions. The femto clocks inside the M15 are the only clock source the DAC chips use so external reclocking of the USB port does nothing. XMOS is a pioneer in "true" asynchronous audio USB. Read this full article:

https://headfonics.com/what-is-jitter-in-audio

And the statement in the conclusion:

"As rule, if DAC’s internal or external dedicated clock generator is used for synchronization, jitter suppressing before a DAC’s digital input is not sensible. "

In this context, only the internal femto clocks inside the M15 are used since M15 does not have an option for an external clock generator.

As to why you are hearing better sound, it's plausible it has more to do with clean power. Once the M15 firmware fixes the no charging option you can compare the W4S while charging is enabled versus straight USB connection with charging disabled. If they sound the same, then your improvements you are hearing are related to power and not jitter.

 

[Nooborghini]

Got the new Cowhide FiiO Case and the HB4 Black carrying case, rush delivery from AliExpress.
Now I gotta wait for the dock to come in!

 

[TubeStack]

Does the M15 constantly skip the first note of a song, like the M11 and M11P?

 

[McCol]

Does the M15 constantly skip the first note of a song, like the M11 and M11P?

Not for me

 

[YCHANGE]

Fiio should have really put a case in with the M15. I've tried to go without, but its getting increasingly uncomfortable to hold in my hand. It's more than just warm. It's a tingly sensation in my hands. Not sure if anyone else has experienced this.

 

[LightBlue77]

Mine does the same but I would imagine it would get hotter with a case. I also don't get it why the 2 pretty expensive boxes, especially the wooden one instead of a case. Marketing not functionality.

 

[marcusd]

After a few months of solid handling we completed our very comprehensive review of the M15 with a few additional wireless performance measurements.

https://headfonics.com/fiio-m15-review/

 

[crazyeyes]

Got the new Cowhide FiiO Case and the HB4 Black carrying case, rush delivery from AliExpress.
Now I gotta wait for the dock to come in!

I can't decide if I want to get this case of the DD hifi case. I like the look of both of them. But I don't want to buy both of them. It seems this FiiO case is no longer available on Aliexpress.

 

[DarginMahkum]

Another interesting insight into development process of DAPs.

"Most of the screens used by Chinese players come from the inventory screen. For example, FiiO's early X5 used screens which were inventory of BlackBerry phones (later many Chinese players also used the same models). Note that the inventory screen here does not mean a defective screen. Like screens of BlackBerry, it was because they have overdone their production plan, and thus caused an unsalable result. So BlackBerry finally failed to purchase screens from Sharp as they originally planned. And these screens were left in the stock which were called inventory screens."

https://www.facebook.com/chung.james.92/posts/2992394467535269

 

[CANiSLAYu]

Got the new Cowhide FiiO Case and the HB4 Black carrying case, rush delivery from AliExpress.
Now I gotta wait for the dock to come in!

Can you comment on how well IEMs fit in the compartment? I had the Miter version that is a similar concept, but I found the IEM compartment too cramped for big IEMs (e.g. EE LX and Sony Z1R).

 

[Nooborghini]

I can't decide if I want to get this case of the DD hifi case. I like the look of both of them. But I don't want to buy both of them. It seems this FiiO case is no longer available on Aliexpress.

Try giving them a PM on AliExpress.

Can you comment on how well IEMs fit in the compartment? I had the Miter version that is a similar concept, but I found the IEM compartment too cramped for big IEMs (e.g. EE LX and Sony Z1R).

I have ear hooks on them so they take a bit more space. Plus I don't like tightening my cable so I took out the divider and tucked it away for later. It would fit the IEM if I disconnected and wrapped a cord very tight if I disassemble them but I swap between my cans and IEM very frequently in a day so I have them like that.

Overall very spacious, if you were meticulous enough, you'd be able to fit probably 3 sets of IEM in there with enough spacing between them. Granted they're disassembled.

 

[DavidWillett]

When I go balanced cable direct to amp RCA (the amp has no volume control or balance) about 10 sec after the track if nothing is playing I get huge hum (90dBA feedback) even with volume off. I expect this is balanced cable related. When I run off my other DAC RCA to RCA - I do not.

Ideas?

 

[Pictograms]

When I go balanced cable direct to amp RCA (the amp has no volume control or balance) about 10 sec after the track if nothing is playing I get huge hum (90dBA feedback) even with volume off. I expect this is balanced cable related. When I run off my other DAC RCA to RCA - I do not.

Ideas?

Are you using the 4.4 or the 2.5? Also why not try the 3.5 as it actually is line out functionality, the balances outputs do not