[Joeybgood]

Could've been a ladder resistor dac which we just call an r2r but really are not r2r (although working similarly with the same idea to convert digital to analog).

Their brief answer seems to hint that they don't want to divulge more info.

lol.. I def got that same impression Andrew! Tks for your input. 

 

[Joeybgood]

This is a VERY good price on some extremely nice vintage R2R components from Sonic Frontiers. Thought someone might wanna jump on it. Cheers!
 
http://www.canuckaudiomart.com/details/649302254-sonic-frontiers-sft1-transport-and-sfd2-mkii-dac/images/1334308/

 

[Joeybgood]

  This is a VERY good price on some extremely nice vintage R2R components from Sonic Frontiers. Thought someone might wanna jump on it. Cheers!
 
http://www.canuckaudiomart.com/details/649302254-sonic-frontiers-sft1-transport-and-sfd2-mkii-dac/images/1334308/

and that price is in CAD so it's only $1250 in USD

 

[doctorjazz]

Have read the SFD-2 is more better (which makes sense, of course, but if you're not looking for a transport, seems you might get the SFD-2 for about three same cost). Parts Connection has the at times...

Right now I'm waiting on a Mojo Mystique for review... Fell into the LH Labs rabbit hole, waiting for a Vi Tube DAC before I can do anything (and waiting, and waiting...)

 

[Joeybgood]

Have read the SFD-2 is more better (which makes sense, of course, but if you're not looking for a transport, seems you might get the SFD-2 for about three same cost). Parts Connection has the at times...

Right now I'm waiting on a Mojo Mystique for review... Fell into the LH Labs rabbit hole, waiting for a Vi Tube DAC before I can do anything (and waiting, and waiting...)

Yes... that would be a fair price just for the DAC so it's almost like getting the transport as a free bonus. I already own this DAC otherwise I would have jumped on it. LOVE my Sonic Frontiers DAC.

 

[taz23]

I do not own a R2-R DACas yet, and I am waiting for one to be completed (see http://www.head-fi.org/t/822033/vinshine-audio-dac-r2r-ref-w-soekris).
 
Has anyone tried this DAC?  http://www.dixo-audio.com/USB_R2R.html
Many thanks!

 

[Joeybgood]

  I do not own a R2-R DACas yet, and I am waiting for one to be completed (see http://www.head-fi.org/t/822033/vinshine-audio-dac-r2r-ref-w-soekris).
 
Has anyone tried this DAC?  http://www.dixo-audio.com/USB_R2R.html
Many thanks!

I have not heard of the dixio audio dac  but it looks quite intriguing. Interested to see/hear what you think of your Vinshine DAC when it arrives. I was interested in having a Soekris dac built a year or so back but it fell through.  cheers!

 

[yawg]

Could've been a ladder resistor dac which we just call an r2r but really are not r2r (although working similarly with the same idea to convert digital to analog).

Their brief answer seems to hint that they don't want to divulge more info.

For example the 5-bit chip of my Arcam CD-23. It's a chip version of the discrete dcs 5-bit chip, a hybrid between 1 and mulitbit DACs. Excellent sound. Alas the CD-23 line-out is only a chip so you get great resolution with somewhat flabby/woolly bass.

 

[taz23]

My first listening impressions of the VinShine R2R DAC was posted at another thread: http://www.head-fi.org/t/822033/vinshine-audio-dac-r2r-ref-w-soekris#post_12988659

 

[zgtc]

The Soekris R2R is a module, other bits like powersupply and digital audio interface needs to be added.

Heres is mine.



The smaller top board is the Raspberry Pi serving as the digital audio interface, in this example it is configured as a networked audio player.

Hi, new to the forum, hope i can learn a lot and also share my improvements while building my system. I have a RPi2 as a player (music stored in NAS) and currently a IQaudIO DAC+ but want to build a serious(ish) player around the pi. I am trying to decide between AK4490/4495 or jump directly to a R2R like the Soekris.

b0bb does the Soekris work fine with the RPi audio coming from the I2S interface without a proper clock? 44.1 and 48 compatible? Is jitter low enough? Have not found much info online about RPi and Soekris combination

Thank you so much

 

[rb2013]

This R2R NOS DAC board looks very interesting!  Maybe time for a new project:

[the ZERO] DAC TDA1540 R2R Isolated nonoversampling NOS Audio with FIFO reclock

Philips invented CD Compact Disc audio and released the world's first audio DAC chip: TDA1540, that's why people also call it [the ZERO]. TDA1540 is a single channel DAC, it is also the only single channel Audio DAC made by philips, it has the highest channel seperation that the later DAC like the famous TDA1541 which cannot ever match. Due to it's unique identity, many people has tried to make TDA1540 DAC but most are failed due to it's incompatible offset binary input format with the latest receiver. But finally, our advanced logic engineer has done it in only few weeks and with the best algorithm for diyer to easily play with it.
R2R, RECLOCK, ISOLATED, NONOVERSAMLING, all mystery area in the audiophile world are now included in an all-in-one compact PCB!
The I2S reclock input circuit in this PCB is based on the Analog Device AN207 stop clock algorithm, left and right channel DAC are latch at the same time. With our enhanced and optimized redesign, it has no phase different problem as the other convertor in the market. The MCK from the I2S input is used to drive the input flip flop for FIFO reclock, it do not have the problem as the other complex reclock scheme which drop or double dozens of unnecessary samples every second, and it do not use CPLD/FPGA(contains thousand of logic gates) as the other design which actually increase the jitter tenth of time(due to the signal path includes thousands of logic gates) after reclock. This PCB is target for audiophile.
The sound from this DAC is unique, sweet, clear and full of detail that the newest cutting edge delta sigma DAC can never produce. If you haven't taste this kind of sound before it's definitely a regret for an audiophile. It's like compare Vinyl and CD, Rollling shutter and global shutter in the DSLR.
This item includes PCB with all SMT component soldered, thru-hole component are not soldered.
Features:
1) TDA1540 world's first R2R Audio DAC - the ZERO
2) Solid ground plane with careful split of digital and analog portion(a must for highest fidelity audio)
3) No Via in active circuit (via inductance always create jitter problem)
4) 0.1% Low noise thin film resistor and C0G Capacitor sourced from Digikey USA (guarantee no fake product from China)
5) Gold plate I2S input connector and four dedicated GND return path for each I2S signal(lowest contact resistance and highest signal quality)
6) The included xmos pcb in the combo is the same as the one sell separately in the store(i.e. flashed with general firmware)
User guide:

1)The TDA1540 PCB can work immediately with only I2S signal and power supply connected, 3.3V (>300mA), +-5V (>100mA), -18V(>100mA), +-12V(>100mA).The +-5V power can be supplied by two individual 5V supply. i.e. 5V1 GND1, 5V2 GND2 connected as 5V=5V1, GND=GND1=5V2, -5V=GND2
2)The reclock quality depends on the jitter of MCK, When used with our XMOS PCB, the MCK is connected to the low jitter low phase noise NDK oscillator directly and achieve the best reclock performance.
3)For windows, set the output to full volume and the same sample rate as the music file for bit perfect non-oversampling NOS audio playback.
4)Microsoft acquires Pacific Microsonics(inventor of the renowned PMD100 and PMD200 digital filter) at Sep-2000, windows user should enjoy the same sound signature as using PMD100/200 when switch to listen at higher than the original music file sample rate from the system sound control panel using NOS DAC.
5)Double check all the capacitor are installed in the correct polarity before turn on your power supply.
6)For Diyer requires more deeper customization or customized IV stage, the Iout directly from the DAC chip is connected to a 2.54mm spacing socket. For advanced usage, the latest version of TDA1540 datasheet is available.
7)Compact size 90mm x 100mm
Specification:
1) I2S Input: MCK, LRCK, BCK, DATA (*BCK = 64x LRCK, MCK >= 2x BCK)
2) Output level: 2V RMS
3) Resolution/Sampling Rate: Upto 16,24,32bit / 192KHz (the most significant 14bit is played)
4) Supply: Regulated 3.3V, +-5V, -18V, +-12V
*There is no new TDA1540 in the market, the included TDA1540 DAC chip is new old stock or fully test recycle chip.

 

 
 
 
http://www.diyinhk.com/shop/audio-kits/100--the-zero-dac-tda1540-r2r-isolated-nonoversampling-nos-audio-with-fifo-reclock.html#/dac_option-xmos_768k_dac_and_oled_pcb

 

[kenman345]

Anyone try this thing yet? 

http://soekris.dk/dac1101.html

 

[BunnyNamedCraig]

Anyone try this thing yet? 

http://soekris.dk/dac1101.html

No I haven't, but man do they talk a lot of talk! Ha. I'm interested....

 

[astrostar59]

  Anyone try this thing yet? 

http://soekris.dk/dac1101.html

There is a huge and long standing thread on other forums, I think at computer audiophile.com and DIY audio. There are lots who have build it and you can get the info you need there.

 

[kenman345]

 
There is a huge and long standing thread on other forums, I think at computer audiophile.com and DIY audio. There are lots who have build it and you can get the info you need there.

You're thinking of the DIY board. The dac1101 is an actual product with the dac on a custom board that is in an enclosure and has a USB input.