[diablo9]

what do you think? full kit $100

schematic:

http://www.jimdearanddarling.com/jason/1865DAC.pdf

 

[diablo9]

edited

 

[PinkFloyd]

So, this is a kit? If so, does the kit come with everything you need (including the enclosure) for £100?

 

[diablo9]

Quote:

Originally Posted by PinkFloyd So, this is a kit? If so, does the kit come with everything you need (including the enclosure) for £100?

yep, the pics is the result assembled from the kit, coming with everything including the case and the transformer, but you may need to change the transformer to adapt 110V in your country.

Nope, it's not 100GBP, it's $100.

 

[diablo9]

Quote:

Originally Posted by PinkFloyd So, this is a kit? If so, does the kit come with everything you need (including the enclosure) for £100?

BTW: could you host the two PDFs for me?

 

[dsavitsk]

It is a ripoff of the AudioNote DAC, but instead of using a passive I/V and tube buffer it uses an opamp I/V and an opamp buffer. Nothing very novel, but, since the cs8414 costs $12, the ad1865N-J (it looks like the J, but it is hard to tell) costs about $25, the SMD adapter board for the for the 8414 costs $10, the 2 28 pin sockets are $10 each, plus the cost of the transformers, opamps, voltage regs, passive components, etc, you certainly could not build this for $100. There are a bunch of easy upgrades as well such as using the 1865N-K instead, and using better opamps, so it could probably be made to sound quite good.

 

[diablo9]

Quote:

Originally Posted by dsavitsk It is a ripoff of the AudioNote DAC, but instead of using a passive I/V and tube buffer it uses an opamp I/V and an opamp buffer. Nothing very novel, but, since the cs8414 costs $12, the ad1865N-J (it looks like the J, but it is hard to tell) costs about $25, the SMD adapter board for the for the 8414 costs $10, the 2 28 pin sockets are $10 each, plus the cost of the transformers, opamps, voltage regs, passive components, etc, you certainly could not build this for $100. There are a bunch of easy upgrades as well such as using the 1865N-K instead, and using better opamps, so it could probably be made to sound quite good.

guess all the prices you mentioned are for US and this is Chinese one. who knows how much are those components for them. They claim it's $100 for whole kit and I believe it.
Yes the price I mentioned is NK version, NJ version is $2 cheaper.

 

[Teerawit]

Hmmm..where is the website to order? How much is shipping to the USA?

 

[diablo9]

Quote:

Originally Posted by Teerawit Hmmm..where is the website to order? How much is shipping to the USA?

http://www.audio-sz.com/
shipping... I don't know. $40?
anyone give me some suggestion/comments on these two pieces! please!
do they worth it? what do you think if compare to, say Headroom microDAC, apogee miniDAC, benchmark DAC1. based on schematic?
anyone please host the two PDFs for me.

 

[Teerawit]

Darn...cannot read....this will be a challenge

Commercial DACs' schematics aren't published, lol. I will let you know how it compares to the Micro DAC if I get one of these

 

[motherone]

Dang.. Someone should pick this up and see how it sounds. Definitely sounds cool for the $$$.. I would pick it up, but I've got a PCM1704K and a Monica 2 DAC to finish up still!

 

[rickcr42]

I don't see how you could beat that for a hundred smackers anywhere.The parts,power supply and casing alone worth that if only as a platform to add a better output stage.Nice find.

If there is an area lacking it is the use of opamp for the IV and output sections but then anything else would ramp the price dramatically.

Quote:

It is a ripoff of the AudioNote DAC, but instead of using a passive I/V and tube buffer it uses an opamp I/V and an opamp buffer. Nothing very novel, but, since the cs8414 costs $12, the ad1865N-J (it looks like the J, but it is hard to tell) costs about $25, the SMD adapter board for the for the 8414 costs $10, the 2 28 pin sockets are $10 each, plus the cost of the transformers, opamps, voltage regs, passive components, etc, you certainly could not build this for $100. There are a bunch of easy upgrades as well such as using the 1865N-K instead, and using better opamps, so it could probably be made to sound quite good.

any Non OS DAC using the AD1865 chip can be considered a ripoff of the audinote dac if by "ripoff" you mean the interface between the receiver chip and the DAC chip so it is usable for stereo operation but that is not the patented part of the design anyway but the very IV stage you reference.

http://audionotekits.espyderweb.net/dacschem.jpg

from this page :

http://audionotekits.espyderweb.net/dac.htm

you can see the 74HCO2 ciruit is the same but that is it.

Other less precise methods are are "out there" including ADI's own attempt but the AN method is a proven method that works so why not emulate it ?

ADI schematic :

http://www.analog.com/UploadedFiles/...60163AN207.pdf

For a really cool design using the AD1865 check this baby out :

http://www.geocities.com/yury_g/dac.htm

My 1865 DAC is a combination of the above and the AudioNote and no way you get off spending a measly $100 once you go to a triode output.well worth the added expense but this DAC posted for such a low price is in my mind a serious bargain and a design easily upgraded at a later time,the fundamentals are good and that is 80& of the battle.The rest is "tweeking" for sound

 

[diablo9]

then I'll probably buy this one and might upgrade it later sometime

 

[blip]

That's an amazing price! Just the enclosure and powersupply could be sold for that much and it would still be a lukewarm deal.

Hmmm... I hope someone gets this and can maybe arrange a group buy if it winds up being decent? (Or just provides translation!)

 

[dsavitsk]

Quote:

Originally Posted by rickcr42 My 1865 DAC is a combination of the above and the AudioNote and no way you get off spending a measly $100 once you go to a triode output.

What do you use for the I/V, rick? Do you use passive, and if so would you care to share what value resistor you found to work and what sort of filtering you have after it? AN seems to use a 380R, and most folks say to stay below 400R and I've seen as low as 100R. I've been working on my own "ripoff" for a while and am not sure what to use on the output. I'd like to stay passive, and for my first project, cheap (i.e., no transformers for now).