FiiO M15 Audio Player | Dual AK4499EQ | 7490 mAh Battery | 64 GB ROM | $1299.99
Jan 9, 2020 at 1:41 PM Post #290 of 3,888

RONJA MESCO

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to me it looks like a plastic box...for the money I hope that sucker is metal like the WM1A is
 
Jan 9, 2020 at 2:09 PM Post #291 of 3,888

recca

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Is the ak4497 a big difference to the ak4499?

Trying to decide between waiting for the m15, (ak4499) or getting the YinLvMei A2. (using ak4497)

Yes I believe they’re lower in distortion and are current output rather than voltage. That requires additional components, additional design and packaging efforts to get a voltage output.
 
Jan 9, 2020 at 2:27 PM Post #292 of 3,888

Infoseeker

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Yes I believe they’re lower in distortion and are current output rather than voltage. That requires additional components, additional design and packaging efforts to get a voltage output.

The distortion difference is probably not significant practically for me. Both are flagships.

But the implementation for voltage is an interesting concept i need to understand. If I am not worried of the noise floor, then a voltage output implementation is not necessary.

Both are pretty quite past the cutoff point at 116db and 124db.
 
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Jan 9, 2020 at 2:28 PM Post #293 of 3,888

Dixter

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Is the ak4497 a big difference to the ak4499?

Trying to decide between waiting for the m15, (ak4499) or getting the YinLvMei A2. (using ak4497)
according to digikey ... the cost of the ak4497 is $51 and the cost of the ak4499 is $84 to customers like you and me... it will be cheaper to fiio for bulk commercial customer...

you can look up the spec sheets here.. https://www.digikey.com/product-detail/en/akm-semiconductor-inc/AK4497EQ/974-1142-1-ND/6235385

the 4497 is 2 channel and the 4499 is 4 channel with better specs...
 
Jan 9, 2020 at 2:39 PM Post #294 of 3,888

recca

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The signal needs to be in voltage to power headphones / speakers. Some DACs output voltage directly and some output current and thus need current to voltage (I/V) conversion.

I’m not sure the negatives and positives of each approach. But at the very least a current output device needs more components to get the signal to a usable state for the power amps.
 
Jan 10, 2020 at 7:42 AM Post #296 of 3,888

chimney189

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I'm not going to lie, but the 15 hours of play-time and better output power are very intriguing considering that I use hard-to-drive headphones.
 
Jan 10, 2020 at 7:55 AM Post #297 of 3,888

Infoseeker

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With your Abyss you probably need the Dx220 max or the YinLvMei A2 (4.2vrms Single-ended, 8.4vrms balanced)

Screenshot_20200110-155821658.jpg
 
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Jan 10, 2020 at 8:01 AM Post #298 of 3,888

chimney189

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With your Abyss you probably need the Dx220 max or the YinLvMei A2 (4.2vrms Single-ended, 8.4vrms balanced)


I'm actually listening with the Abyss Diana v2 right now plugged into the M11. It has to be on High Gain, but most songs I can listen from 95-120 on the volume slider.

I think the deciding factor would be whether or not there is a marked difference in sound quality between the M11 and the M15.
 
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Jan 10, 2020 at 12:36 PM Post #299 of 3,888

Pictograms

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I'm actually listening with the Abyss Diana v2 right now plugged into the M11. It has to be on High Gain, but most songs I can listen from 95-120 on the volume slider.

I think the deciding factor would be whether or not there is a marked difference in sound quality between the M11 and the M15.
I’ll be comparing the M15 to my mojo with the Diana Phi once the M15 arrives, I haven’t heard the M11 but I liked the mojo more than the IBasso dx200 with any amp if that gives you a reference
 

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