FiiO K7/K7BT Desktop DAC&Headphone AMP Discussion | XLR Balance | Dual THX AAA | Xmos | ...
Jan 4, 2021 at 1:21 AM Post #320 of 1,432
I thought 2xAKM4499 is technically mandatory to balanced output. Why need 2 then?

In fact, 1 can have a balanced output. But with 2, the outputs can be independent and the sound quality and output power will be higher.
 
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Jan 4, 2021 at 3:06 AM Post #323 of 1,432
I thought 2xAKM4499 is technically mandatory to balanced output. Why need 2 then?
The AKM4499 is a quad channel chip. The D90 DAC splits the 4 channels into a pair of two channels each to achieve its balanced output.

Dual AKM4499 in the K9 pro would mean each chip would have its complete 4 channels available for each end of the balanced output.
 
Mar 22, 2021 at 4:42 AM Post #327 of 1,432
@FiiO Willson I do like Burr Brown too, they often get overlooked, but companies like IFI use them a lot.
Almost all of IFI's products use Burr Brown chips; however, we have no plans to introduce them for the time being, thank you very much for your support!
 
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Jul 17, 2022 at 8:53 AM Post #329 of 1,432
it looks like the K7 won’t go beyond the drawing board…
 
Jul 17, 2022 at 1:23 PM Post #330 of 1,432
The K7 is well planned for this year

https://fb.watch/ej-DBxnF6w/
Since its launch, the FiiO K5 Pro has been welcomed by users with its compact size, robust output power and competitive price. In fact, our users have kept urging us to increase the balanced output. However, due to chip supply shortage in the past two years, it took us great effort to replace the DAC chip. So we had less time for new product development.
Fortunately, we made it this year. The K7 is expected to enter the market in September. Although the housing is the same as the K5 Pro, the inner structure has been greatly adjusted. The headphone output is a four-way true balanced amplifier structure. In addition, we have also designed something new for the appearance, esp. the light effects.
I would like to show several light effects of turning on. See if you like them or not.
The first design is a loop of iridescent lights showing up when the K7 turns on, and then the light will turn blue.
 

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