T+a dac 8 dsd

[Noodeling]

 

I'm using a wireworld Silver electra 7 power chord with very good results.

 

 

It's a RCA Plug with a 75Ohm resistor.

 

 

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[Noodeling]

And no power conditioner. Instead I'm using a relative cheap wireworld Power Distributor protected against magnetic distortion by mu-metal foil.

 

 

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[blue2]

T+A DAC 8 DSD gets an excellent review on Audiostream including HQPlayer DSD512 upsampling using SGM server.

[cmarin]

T+A DAC 8 DSD gets an excellent review on Audiostream including HQPlayer DSD512 upsampling using SGM server.

 

Hi blue2,

 

I may have missed the reference in the review, but what server was the reviewer using to feed the totalDac and Rossini DACs which the reviewer preferred over the T+A DAC8, albeit by "inches"? Did he use the SGM server on the totalDac and Rossini as well?

 

Thanks.

 

 

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[blue2]

Hi blue2,I may have missed the reference in the review, but what server was the reviewer using to feed the totalDac and Rossini DACs which the reviewer preferred over the T+A DAC8, albeit by "inches"? Did he use the SGM server on the totalDac and Rossini as well?Thanks.Sent from my iPhone using Computer Audiophile

I'd ask Michael Lavorgna I don't see anything explicit but he does say "in-use during the DAC 8 review: totaldac d1-six, Sound Galleries SGM server". No mention of the dCS Rossini except in his comment that the DAC 8 is only bettered by these 2. hifal has already commented with a strong recommendation to take it to the next level with SGM.

[cmarin]

I'd ask Michael Lavorgna I don't see anything explicit but he does say "in-use during the DAC 8 review: totaldac d1-six, Sound Galleries SGM server". No mention of the dCS Rossini except in his comment that the DAC 8 is only bettered by these 2. hifal has already commented with a strong recommendation to take it to the next level with SGM.

 

Thanks Blue2. Will try to reach out

 

 

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[sdolezalek]

T+A DAC 8 DSD gets an excellent review on Audiostream including HQPlayer DSD512 upsampling using SGM server.

 

I was somewhat surprised to see Michael describe DSD512 in the very first paragraph of his review as "512 times the CD rate." Doesn't he understand the difference between PCM and DSD? An SACD is DSD64, so DSD 512 is 8 times the SACD rate, but an SACD isn't 64 times the CD rate, it's a different form of coding.

 

Maybe you don't need to understand it to appreciate the difference.

[lmitche]

 

Maybe you don't need to understand it to appreciate the difference.

 

You certainly don't need understand the technology to hear the difference, especially with the SGM and T+A combination.

[k6davis]

I was somewhat surprised to see Michael describe DSD512 in the very first paragraph of his review as "512 times the CD rate." Doesn't he understand the difference between PCM and DSD? An SACD is DSD64, so DSD 512 is 8 times the SACD rate, but an SACD isn't 64 times the CD rate, it's a different form of coding.

Maybe you don't need to understand it to appreciate the difference.

 

I don't see anything wrong with what Michael wrote. PCM and DSD are different forms of coding but:

 

 

• 44.1 kHz (Redbook PCM) * 64 = 2,822.4 kHz (SACD Rate)
  
• 44.1 kHz (Redbook PCM) * 512 = 22,579.2 kHz (DSD512 Rate)
  

 

SACD's data rate actually is 64 times the CD rate.

[sdolezalek]

I don't see anything wrong with what Michael wrote. PCM and DSD are different forms of coding but:

 

 

• 44.1 kHz (Redbook PCM) * 64 = 2,822.4 kHz (SACD Rate)
  
• 44.1 kHz (Redbook PCM) * 512 = 22,579.2 kHz (DSD512 Rate)
  

 

SACD's data rate actually is 64 times the CD rate.

 

I stand corrected. Of course they aren't measuring the same thing, but I from a sampling rate speed, you are correct. My apologies.

[Miska]

I stand corrected. Of course they aren't measuring the same thing, but I from a sampling rate speed, you are correct. My apologies.

 

In HQPlayer, the 44.1k 16-bit integer CD data is first upsampled using 512x digital filter to 22.6 MHz 64-bit floating point before entering the modulator stage to produce DSD bitstream... So from upsampling factor point of view it is also correct. So the intermediate phase has 2048x the data rate of original (4 * 512) and final DSD output has data rate 32x of the original.

 

So depends on how you want to view it.

[juanitox]

In HQPlayer, the 44.1k 16-bit integer CD data is first upsampled using 512x digital filter to 22.6 MHz 64-bit floating point before entering the modulator stage to produce DSD bitstream... So from upsampling factor point of view it is also correct. So the intermediate phase has 2048x the data rate of original (4 * 512) and final DSD output has data rate 32x of the original.

 

So depends on how you want to view it.

 

another use for the Dac8 with Hq player , playing PCM straight i'v got 20° celsius in the living room and when upsampling to DSD 512 it raise 21° ,

great feature for winter time

[EuroDriver]

In HQPlayer, the 44.1k 16-bit integer CD data is first upsampled using 512x digital filter to 22.6 MHz 64-bit floating point before entering the modulator stage to produce DSD bitstream... So from upsampling factor point of view it is also correct. So the intermediate phase has 2048x the data rate of original (4 * 512) and final DSD output has data rate 32x of the original.

 

So depends on how you want to view it.

 

This is a seminal post from Jussi ! It suggests the weighting of factors that deliver the surprisingly big sound quality up lift when going from DSD 256 to DSD 512

 

Forget DXD or DSD 512 DAC's, we want under our Christmas tree in 11 months time a PCM 64 bit (floating) / 22.6 MHz DAC

 

How would R2R handle 64 bit floating ?!?

[Miska]

Forget DXD or DSD 512 DAC's, we want under our Christmas tree in 11 months time a PCM 64 bit (floating) / 22.6 MHz DAC

 

That is just plain unrealistic and impossible by physics... Even for 24-bit integer.

 

How would R2R handle 64 bit floating ?!?

 

It cannot

 

R2R and PCM are plain stupid ideas for hardware, there are better ways like SDM DACs.

[EuroDriver]

That is just plain unrealistic and impossible by physics... Even for 24-bit integer.

 

 

 

It cannot

 

R2R and PCM are plain stupid ideas for hardware, there are better ways like SDM DACs.

 

Jussi,

 

My post was Just tongue in cheek school boy humor ! This type of silly post should have been saved by me for April 1st

 

Apologies for posting on January 2nd

 

Happy New Year !

[Miska]

My post was Just tongue in cheek school boy humor ! This type of silly post should have been saved by me for April 1st

 

Apologies for posting on January 2nd

 

Finns are not known for being the best detecting humor, except some darkest forms of sarcasm...

 

Happy New Year!

[jabbr]

That is just plain unrealistic and impossible by physics... Even for 24-bit integer.

 

Maybe if we LN2 cool the DAC chip? Hmm what are the molecular limits of laser trim...

[Miska]

Maybe if we LN2 cool the DAC chip? Hmm what are the molecular limits of laser trim...

 

For 22.6 MHz it is really hard, because the settling time vs settling precision requirements become so demanding. If the output doesn't settle even to ½ LSB accuracy within less than ½ of the sample period, the "resolution" becomes sort of pointless.

[jabbr]

For 22.6 MHz it is really hard, because the settling time vs settling precision requirements become so demanding. If the output doesn't settle even to ½ LSB accuracy within less than ½ of the sample period, the "resolution" becomes sort of pointless.

 

[emoji6][emoji6]... testing to see if you are genuine Finnish -- pass [emoji41]

[sydlow]

Has there been any info on whether this DAC will support MQA decoding in a future firmware update?

[sydlow]

Playing around with Tidal/MQA.

I'm not seeing the T+A as an output device in the Tidal App.

Anyone else?

 

[GUTB]

Well. My primary USB bridge is an LKS that uses an Amanero board. Tidal also doesn't see it; audio still goes through the interface but it's just not detected in Tidal. I also tried an XMOS-based Gustard U12, still not detected.

 

Anyway I have a Meridian Explorer 2 on order; if that doesn't get detected either something is up with my music server.

 

 

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[sydlow]

Well. My primary USB bridge is an LKS that uses an Amanero board. Tidal also doesn't see it; audio still goes through the interface but it's just not detected in Tidal. I also tried an XMOS-based Gustard U12, still not detected

Thanks. Good to know.

[yanqing]

512 dsd has the best sound!

[louisxiawei]

Hey Ted,

 

I've just placed the order of T+A DAC8 DSD. Now I can compare exasound e12 DSD256+ vs T+A DAC8 DSD512+ through HQplayer.

 

Can't wait for it!

 

Off the topic: exasound e12 upsampling to 12288000 with DSD256+fs modulator sounds the best. I would recommend untick the auto rate family option for upsampling to highest rate.