When you install tentlab, you skip the 2x 22pF and crystal.
This is explained in http://www.dddac.com/documents/dddac1794s_nos_ver42.pdf .
Page three clearly outlines the various options on the dddac.
This is explained in http://www.dddac.com/documents/dddac1794s_nos_ver42.pdf .
Page three clearly outlines the various options on the dddac.
Maybe it was a cold joint that it didn't work from the 1st time. The position of the clock confused me with the name looking to the left when installed. So I removed it and installed a Crystal and the music was on. I will try to have a Tentlab back, of course. I just want to be sure the clock sits correctly. A dot on the clock should be between 2 wima caps, right?
Attachments
Thank you, guys. I guessed that. Just wanted to be sure. 1st listening experience - quite impressive! Now it's time to tune the device. I need to reread the theme again to understand if I need 4 Dac boards or shall I stick with one. I use no caps, balanced straight into a preamp. 1st I guess I'll go with power upgrade. I like what Supersurfer is doing. I wonder what Lundahl will he use with just 1 board.
No, Tentlab doesn't work. I redid all the soldering, changed a closest cap, no. I ordered a new clock so I can be sure the problem lies here.
Anyway, I am waiting for a near future battle between this DAC and a dual mono BIII with tube output stage I am using now and which I like. I will keep you informed.
In response to the fellow quoting KILLERDAC -
Notebook computers are every bit as full of SMPSs as desktops. Just because there is a battery does not mean the battery is actually feeding the components directly.
Feeding DC-DC converters with a battery is no solution. Notebook batteries are pretty wimpy, too.
Motherboards will have different amounts of USB polling spikes and latencies.
Soundcards are not constantly connected to the data stream, either. I preferred soundcards until the WAVEIO. The problem now is that soundcards have become scarce. Not much choice, only the super expensive ones are concerned with sound quality and even then are full of useless features for serious home audio use.
It would be interesting if he made the same measurements with a sound card. There would be spikes with a soundcard also, maybe not as large?
Notebook computers are every bit as full of SMPSs as desktops. Just because there is a battery does not mean the battery is actually feeding the components directly.
Feeding DC-DC converters with a battery is no solution. Notebook batteries are pretty wimpy, too.
Motherboards will have different amounts of USB polling spikes and latencies.
Soundcards are not constantly connected to the data stream, either. I preferred soundcards until the WAVEIO. The problem now is that soundcards have become scarce. Not much choice, only the super expensive ones are concerned with sound quality and even then are full of useless features for serious home audio use.
It would be interesting if he made the same measurements with a sound card. There would be spikes with a soundcard also, maybe not as large?
It depends on your main board, if you use the old without SPDIF input than 1K, the new with SPDIF do the delay with monoflop, therefore a 100Ohm is correct.
I don't expect any differnece by using normal resistor types in the data line.
I thought about to use 50 Ohm in place were the two data lines of the PCM1794 connected.
Regards
thanks for the quick replies guys
my confusion is starting to make sense ive got the old main board and the new dac boards which are labeled 100 ohms
i dunno about using TX2575 maybe a little too extravagant for me
recommendation for something easily available would be welcome
@rhlauranna
That's one of the reasons why a nice embedded board with i2s output sounds so much better than a PC
And a BBB with cape from twisted pear would be awesome!
this sounds really good !
would you be able to build that ?
Hi Reinhard,
You have been listening to my raspberry pi with i2s out at Klaus.
I have the bbb, just waiting for twisted pear to start shipping the first cape boards.
Regards,
I am still impressed about the knowledge and DIY optimizing spirit in here.
Just one jump in question:
Has anyone of the gurus ever compared this DAC to a ESS9018 or other top notch chips and/or implementations.
I just entered the world of DAC with the RaspPi and a 9023 and I am already impressed. Hard to believe that there is a lot more toimprove out there
Just one jump in question:
Has anyone of the gurus ever compared this DAC to a ESS9018 or other top notch chips and/or implementations.
I just entered the world of DAC with the RaspPi and a 9023 and I am already impressed. Hard to believe that there is a lot more toimprove out there
I am still impressed about the knowledge and DIY optimizing spirit in here.
Just one jump in question:
Has anyone of the gurus ever compared this DAC to a ESS9018 or other top notch chips and/or implementations.
I just entered the world of DAC with the RaspPi and a 9023 and I am already impressed. Hard to believe that there is a lot more toimprove out there
I’m by no means a “guru” but I used to own a Sabre 9018 chip based (Audio-GD NFB-28). It’s nearly impossible to compare apples with apples in the DAC world due to all the variables. The quality of the implementation makes a "big" difference. But the standard DDDAC build sounded more natural to my ears directlt compared with the NFB-28, I attributed this to the fact that the DDDAC is a NOS design. I guess the tweak-ability of the DDDAC means you can get close to what you like best, in combination with your equipment. What I understand from the Sabre 9018 chip is that it’s pretty difficult animal to tame. The Twisted Pear Buffalo-III |(Sabre 9018 chip based) seems to be highly regarded though and has a nice small footprint.
Over at Head-hifi there are more Sabre DAC converts: Is Sabre ES9018 the best DAC chip right now?
Problem solved. There is 100 Ohm resistor in the row of 10 kOhm ones (I soldered 10k).
Can someone guide me next steps, please. I either go 4 decks or start with shunts wih 1 deck. Which is a bigger step in hi-fi?
I am still impressed about the knowledge and DIY optimizing spirit in here.
Just one jump in question:
Has anyone of the gurus ever compared this DAC to a ESS9018 or other top notch chips and/or implementations.
I just entered the world of DAC with the RaspPi and a 9023 and I am already impressed. Hard to believe that there is a lot more toimprove out there
I rember that Leif had wrote comments about DDAC and Buffalo, please look here.
We did some side by side tests and I preferred 1 deck with shunts to 4 decks without