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AK4499EQ - Best DAC ever
AK4499EQ - Best DAC ever
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Old 24th July 2019, 05:14 AM   #11
chris719 is offline chris719  United States
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AK4499EQ - Best DAC ever
Quote:
Originally Posted by abraxalito View Post
Does to me. Can't speak for anyone else though.



How so? I find current outputs useful as it allows filtering prior to any active stage and adding the filter does produce subjective improvement (not only to my ears). Trying to add a passive filter to an ESS or AKM resistor array DAC does look rather fraught to me.
Well, I won't argue about any subjective criteria, but my thought was that if the current output didn't give the best paper specs, even the Sabre would have been voltage out. Current outputs are like the manual transmission - enthusiasts like them and manufacturers hate them. Certainly I think there is an argument to be made that AK4497 (voltage out) brings the normal measurements to levels that are already overkill.
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Old 24th July 2019, 05:18 AM   #12
abraxalito is offline abraxalito  United Kingdom
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I think we're meaning different things by 'current output'. What I think you maybe mean is 'designed to feed into a short' whereas I mean 'current sourced from a high impedance'. I'm not arguing for resistor array DACs in either form.
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Old 24th July 2019, 05:29 AM   #13
chris719 is offline chris719  United States
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Quote:
Originally Posted by abraxalito View Post
I think we're meaning different things by 'current output'. What I think you maybe mean is 'designed to feed into a short' whereas I mean 'current sourced from a high impedance'. I'm not arguing for resistor array DACs in either form.
I suppose from your perspective there is a difference with what you want to do. For me, the switched resistor outputs are just a crappy low Z current source, but doesn't make that much difference if you're going straight into an op-amp virtual ground.

When I talk about voltage output I'm talking about the switched cap filter output DACs like the usual AKM and Cirrus parts. Which I think in their latter iterations are more than good enough already.
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Old 24th July 2019, 06:20 AM   #14
abraxalito is offline abraxalito  United Kingdom
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Originally Posted by chris719 View Post
I suppose from your perspective there is a difference with what you want to do. For me, the switched resistor outputs are just a crappy low Z current source, but doesn't make that much difference if you're going straight into an op-amp virtual ground.
Right from your PoV. From mine a 'current source' with a low impedance Zout isn't a real current source at all. PSRR suffers as a consequence, which makes having an ultra-clean reference supply a critical design requirement.
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Old 24th July 2019, 05:25 PM   #15
hollowman is offline hollowman  United States
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The AKM 4499 datasheet opens with:
Quote:
The AK4499 is a 32-bit 4ch Switched Resistor DAC which adopts newly developed technology, achieving the industry’s leading level low distortion and low noise characteristics.
So what is a "Switched Resistor " DAC? Note that the Switched Resistor stage FOLLOWS the SD stage per the datasheet's block diagram. (only DSD not volume-controlled has a direct input to the Switched Resistor stage).
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Old 24th July 2019, 09:11 PM   #16
Markw4 is offline Markw4  United States
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Anybody listen to AK4499 into an SOA low distortion amplifier? The dac distortion is not overkill if one listens carefully.

Obviously, its not a commodity part to put into a laptop though, if that sort of part is what some may see as being more than good enough.
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Old 2nd September 2019, 01:12 PM   #17
NicoB is offline NicoB  France
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I thinks now it's interesting to have a chip that allow to have the less components as possible at the output stage, no I/V Stage so voltage output for exemple.

Between the TI, AKM, CS, there is one that is easier to integrate ? Thanks to a bigger volt out may be ?
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Old 2nd September 2019, 01:19 PM   #18
trung224 is offline trung224
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Quote:
Originally Posted by NicoB View Post
I thinks now it's interesting to have a chip that allow to have the less components as possible at the output stage, no I/V Stage so voltage output for exemple.

Between the TI, AKM, CS, there is one that is easier to integrate ? Thanks to a bigger volt out may be ?
I think AK4490 and its upgrade AK4493 will be a good fit for you
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Old 2nd September 2019, 01:24 PM   #19
diyralf is offline diyralf
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I must correct myself. Apparently the ES9038PRO is the best DAC

Matrix Audio X-SABRE Pro MQA: Best Audio DAC in the World? | Audio Science Review (ASR) Forum
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Old 2nd September 2019, 01:47 PM   #20
JensH is offline JensH  Denmark
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AK4499EQ - Best DAC ever
I think it is far too early to draw any conclusions regarding the best DAC IC. The Matrix DAC does seem to be very good, but who knows, perhaps a well-engineered AK4499 DAC can be made even better? I guess only time will tell.

We should distinguish between best complete DAC product and best DAC IC.
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