[adeadcrab]

Could be the different frequency response on android. Maybe worth a read:

https://www.soundguys.com/the-ultimate-guide-to-bluetooth-headphones-aac-20296/

They cite lack of processing power for bad SINAD readings. Their best readings on android are from a 2017 model - I can say with certainty that the M11 Plus smokes any of these processors.

Maybe my iPhone just needs a wipe and fresh install. Maybe it's the signal processing from the iPhone's H1 chip as the M11 Plus uses regular Bluetooth - perhaps with less interference of the signal?

 

[rlw6534]

They cite lack of processing power for bad SINAD readings. Their best readings on android are from a 2017 model - I can say with certainty that the M11 Plus smokes any of these processors.

Maybe my iPhone just needs a wipe and fresh install. Maybe it's the signal processing from the iPhone's H1 chip as the M11 Plus uses regular Bluetooth - perhaps with less interference of the signal?

Yeah, I've generally avoided AAC bluetooth on my Android devices because of these issues. It certainly makes sense that things have gotten better with time. I can't personally hear much above 12,000 Hz anyway...

I do think that people tend to over-rate the SD 660. While it's as good as it gets in the DAP market, it's still a 5 year old mid-grade processor. My LG V30 (again 5 years old) is noticeably faster.

 

[hatbox]

I do think that people tend to over-rate the SD 660. While it's as good as it gets in the DAP market, it's still a 5 year old mid-grade processor. My LG V30 (again 5 years old) is noticeably faster.

Yes, it is. The smartphone must perform many other functions - the telephone part, messaging, calendar, GPS location, etc. Unfortunately, the M11+DEV processor is doing the same thing. Although there are no hardware components in the player, their functions remain in the firmware, and continue to load the player with unnecessary work. And unfortunately, Fiio does not want to deal with firmware more deeply - to remove all unnecessary but wasted components.

 

[kodered]

Sadly, will be returning my M11 ESS this week. Still not a word if and when USB DAC delay can be fixed. Rest is fine, but the DAC mode is very important for me and it is unusable with 0.3 sec delay.

I sold mine for the same reason, from my own testing it seems the M15 is the only Fiio that doesn’t have the delay, the M15 has a XMOS chip in it. Perhaps wait for the new M15s

 

[padawan25]

What would be the best way to hook the M11 Plus LTD to the K9 Pro AKM……USB-C cable ?

It wouldn’t have to be one of those silly OTG cables would it ??

 

[Ichos]

What would be the best way to hook the M11 Plus LTD to the K9 Pro AKM……USB-C cable ?

It wouldn’t have to be one of those silly OTG cables would it ??

Why not a good coaxial one?

 

[Amber Rain]

What would be the best way to hook the M11 Plus LTD to the K9 Pro AKM……USB-C cable ?

It wouldn’t have to be one of those silly OTG cables would it ??

Fiio makes its own cable (LD TC1) a USB B to USB C cable for this purpose. I've not got one, so can't vouch for it, but you may want to consider it...

 

[RROWI]

Hello, the charging optimization also works with the device power off?

 

[padawan25]

Why not a good coaxial one?

I haven't received the M11 Plus LTD yet.....should have it today. I didn't know it had Coax out on the M11.

 

[Ichos]

I haven't received the M11 Plus LTD yet.....should have it today. I didn't know it had Coax out on the M11.

Oops, my bad , I thought that it was the M17...
Sorry, in your case there is a coaxial output but via the 3.5mm socket.
So you can either use the USB output with a cable from USB type C to type B or a 3.5mm to RCA coaxial cable like FiiO L21.

 

[padawan25]

Oops, my bad , I thought that it was the M17...
Sorry, in your case there is a coaxial output but via the 3.5mm socket.
So you can either use the USB output with a cable from USB type C to type B or a 3.5mm to RCA coaxial cable like FiiO L21.

The K9 Pro has USB-C input on the side.

So will USB-C from the M11 Plus to the K9 Pro work ?

 

[Ichos]

The K9 Pro has USB-C input on the side.

So will USB-C from the M11 Plus to the K9 Pro work ?

Oh I thought that only the ESS version was with the USB type C input.
In this case the only thing you need is a good quality USB type C to C cable.

 

[padawan25]

Oh I thought that only the ESS version was with the USB type C input.
In this case the only thing you need is a good quality USB type C to C cable.

OK, because it's a FiiO to FiiO product......the cable doesn't have to be OTG ?

 

[Ichos]

OK, because it's a FiiO to FiiO product......the cable doesn't have to be OTG ?

I am not sure about that.
FiiO are making their own cable LT-TC3.

 

[123peter]

I asked myself this question - the FIIO M11 Plus has better or worse sound than the FIIO K9.

If it is worse, then connecting the M11 Plus to the K9 will significantly improve the sound quality?
Have you had the opportunity to compare the two devices in one listening session?
Of course, not being guided by the functionalities because they are two different devices - but so purely sonically which is better?