Very first, because this is discussion thread
*I am not promoting.
*I will not talk about pricing here.
*Anything not related to discussion can be done on PM.

Before reading up, keep your eyes on the photo First!



Here are some leak prototype photos for the next High_performance@Low_cost mini DAC that will bring for everyone, and now
with coaxial input output! The performance would be AT LEAST tripled of PCM270X families. For PCM2704/ordance/GoVibe
users, don't be upset because PCM270X family are still a very great performer because it has very good BB sound signature.
It's better for every pre-owner to keep it than resell it if you like this hobby!

Before i bullshitting too much here. come on guys let's
guess what is the DAC used in this mini size dac?!
TIPs, a 14soic IC!!




p.s. It's still a naked one because i wan you to get your hand dirty into this hobby!

This post has been edited by chchyong89: Dec 19 2010, 12:46 AM

will you be ordering this later?

Yes, there will be only one reseller in the world, for this moment, only me.

I uses some kind of Wolfson chip?

is that blackgate caps?

do tell us when you got the stock.

guess it

Nope, i will not use blackgates on it. A blackgate caps
is more expensive than this dac, so it don't worth the
price. But every parts is standard one as you can see.
(Take note, this is not commercialize product, so the selling price will be verrrry )

Eh taiko , PCM1744 keh ?

Cirrus??? Triple means.... 48khz to 192khz hehe
Great product, may be my next upgrade again
There is nothing to upset with if you already have DAC even if it's lower performance than this and cost much expensive.

looks sexy XD
n clean

btw what are those empty spaces for?
for us to mod/add stuff in it
or it's just extra space that is not required?

This post has been edited by power911: Dec 17 2010, 11:49 AM

Rate remain but the SNR quality output
*Guess the exact ic name

How to say if same price or even cheaper

p.s. i mentioned "if"

bukan, try again


Yeap, it's very small in size too! the empty space is previous
prototype version for boards checking with tries and different
attemps. There will be little bit different for final product. Cross
your finger now

This post has been edited by chchyong89: Dec 17 2010, 12:08 PM

No BB dac ar ? sad

Heyy.. I am interested in this also!

i only see optical and coaxial input, where is the usb input as per title?

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Added on December 17, 2010, 12:33 pmThe square thing is USB not optical toslink.

This post has been edited by ssyycc: Dec 17 2010, 12:33 PM

oww, it looks like optical input in the picture..thanx for the correction

The board has so many empty pads without components. Is this unfinished? Or user-upgradable?

TI PCM2706 lah ....

it has been answered somewhere up there

i think the emtpy space is those lebih thing such as mic or other crap

come come jazzy, have some guess before the final product is
up for sale

usb and coaxial

This is the prototype version. The place where components filled will be
only the final components that will used. The final product will not have
those empty pads. And the PCB will be in black glossy finished instead of
blue like the picture! sexy huh?

No, it won't be pcm270X familes. It's only taking the
I2S output from pcm2706

This post has been edited by chchyong89: Dec 17 2010, 12:51 PM

I am very sure is a Wolfson Chip...

WM8501? is it?



quite sure is WM8501...

This post has been edited by santik: Dec 17 2010, 07:38 PM

Mmm, this is getting more interesting.

---

Added on December 17, 2010, 1:11 pmBtw, finished product will have mounting holes? Or intended to be naked again?

This post has been edited by mengsuan: Dec 17 2010, 01:11 PM

This time clothes on or not? Bikini??

I think it should be bikini style, Ts usually bring in naked stuff, hehe

If its not a WOLFSON, I won't buy it!

Since you mentioned SOIC-14, there's a few selections:
WM8501, 8521, 8725 and 8726.

Any other clues?

This post has been edited by jazzy939: Dec 17 2010, 02:47 PM

woah nice stuff bro!!
pleasseee.....give us Silmic for the output caps.....

ini.............
...
lambat sangat...

macam dah tak berminat lo.. >_<

I'm skipping as well. ^^

how much is this better than go-vibe dac?

more better than the previous mini dac u selling last time?

aiyoh, wherelah this chchyong?

yaloh, let people guess then forever no answer. alamak.

lol.... where got forever

few of you already get the answer
Here it is! --> WOLFSON

Don't so fast to judge you will getting it or not, once i announce the
price for it at garage sales, you will be itchy

This post has been edited by chchyong89: Dec 17 2010, 11:39 PM

What kind of an answer is that?

Let me guess.
WM8501
Features

* Stereo DAC with 1.7Vrms line driver from 5V analogue supply
* Audio performance
* - 100dB SNR (‘A’ weighted @ 48kHz)
* - -<no spam links> THD
* DAC Sampling Frequency: 8kHz – 192kHz
* Pin Selectable Audio Data Interface Format
* - I2S, 16-bit Right Justified or DSP
* 14-lead SOIC package
* 4.5V - 5.5V analogue, 2.7V - 5.5V digital supply operation

Any price???

This post has been edited by ssyycc: Dec 17 2010, 11:43 PM

Whoa, with guessing game some moar... first time seeing this. Small and neat.

ssyycc,
That Wolfson is part of my list too.
Its a matter of price now which chip is 'value for money'
Like I said, it better be a Wolfson!

Ok jazzy let share the prize, if there is any.

This post has been edited by ssyycc: Dec 17 2010, 11:52 PM

Got prize ah chchyong?
Give us the early birds some 'special' discounts is good enough for me! Right, ssyycc?

haha, no problem. For both jazzy and santik, both of you will getting RM15 discount!

For the price, pls PM me, since it's not good to advertise here.

Whoa! Excellent!
PM sent



This post has been edited by jazzy939: Dec 18 2010, 12:13 AM

boy someone here is really desperate for a usb dac.....

And who is that gabanyayaya?

chchyong89

don't you want to bring some usb to digital interface......????

really interested =D

interesting..should i? heheh.

I am just curious on this DAC especially the WOLFSON DAC.
I used to have a 'cap ayam' DVD player bought from TESCO that played audio CD with a good quality sound! It did not last long however as the CD mechanism refused to read any CDs/DVDs after a year(ie warranty expired). At 79.90 I just wanna throw it away but I did open up and have a look at the mainboard. Guess what, there lies a WOLFSON DAC!

Teddy Pardo of TeddyPardo High End Audio among the products, is selling a HIGH END DAC that costs more EURO1163, he also uses a WOLFSON DAC albeit a different unit.
Link: http://www.teddypardo.com/
Click products then DACs.

So let's see how good this WM8501 is against my other two commercial DACs..

It's 'cheap' so what the heck!

This post has been edited by jazzy939: Dec 18 2010, 01:22 AM

This is MUCH better than the previous PCM2704 USB DAC you bringing. I like the idea PCM2706 convert USB to I2S, then feed to WM8501 which itself don't need any opamp.

Would be better if it have RCA out though.

This post has been edited by Najmods: Dec 18 2010, 01:18 AM

I agree!!!

I got it right... eh, got prize...

Serious.

just wondering can i2s data from the on board PCM2706 be hacked to another dac..???

Hmmm I see where you're getting at..
Surely it is (electrically) possible to 'tap' the signal from the PCM2706 and port it elsewhere..

tapping the signal is easy but if i follow this path i need to design a special switching circuit for switching between i2s data from dac receiver and i2s data from this usb board to my dac chip...

Exactly!

Stay tune for the final product's photo!

For the spdif, i have no idea yet

Your neighbor!:blush:

Yeap, pcm270X families is no way to catch up wm8501.

There might be RCA output at the final product, who know

Yeap. you and jazzy got RM15 discount for this babe!

Yes, who know there will be i2s pins reserved on the pcb there to
make it more flexible for DIYer? I am just giving rumors

Whoa.. nice carrots you're dangling in front of us lah chchyong!
This would make the anticipation unbearable!

Hoping for the best lah..

pcm270x + wm8501, oh man, this is like gamma1 edi

schem is lotsa different

roughly when the thing will be done?

alot more worst right?

who know this sound better


mid jan

This post has been edited by chchyong89: Dec 18 2010, 12:20 PM

can PM me da price for tis dac?



This post has been edited by ckkeong: Dec 18 2010, 01:02 PM

har... RM15 only kah?

not more? + I am the first one to guess it right...

chchyong

better build one demo set first....set up a small TT and let someone who craving so much for this to come and witness its potential.....I know a very well suited place to host this session .....

Wolfson is good.


Burr Brown is another one...

---

Added on December 18, 2010, 2:09 pmeh... why don't use mini B USB? the ones that come with cameras...

that's is a much more common cable...

and the final product... it's black right? nice!

eh... roughly how big will it be? W X L ?

This post has been edited by santik: Dec 18 2010, 02:09 PM

The cables will be included for all of the dac. The size
is roughly 7x6cm. I haven't measure it yet.



a TT seem very interesting

is this thing better than xonar essence STX? newbie here hehe

count me in if between 11-13 jan, I still have everything with me still

chchyong89, better bribe me one unit otherwise I cheong sui your product.

I strive to be evil and all that.

both of you are so scary

chchyong89

keep promoting. I might joint in the GB after have some listening test for this dac soon...!!!

BTW what about the psu needed???? how much voltage and current needed......5V like usual ????

I already have the best psu configuration in my head right now together further mods that can be apply to this dac...

So it's true that we can extract i2s data from this dac and omit the dac chip???

the receiver used is simply configured to output i2s.

Yes you can tap the I2S directly.

what would it be.... pcm 2707 ???

pcm2706 both i2s out from pcm2706/7 are same.

I don't see any other IC other than the PCM270x and the Wolfson DAC(minus the U1,possibly a DC-DC converter),so how you defined the coaxial 'input'??

Or is it a coaxial 'out' ??

This post has been edited by Leolabs: Dec 19 2010, 12:29 AM

I agree on this.

oops, my apologize in this, i was given a wrong informations on that, however it's optical
output. Thanks for corrected me from getting misunderstanding by others. My bad for
not double check what i typed at very first

can't wait to listen to it...


so? got 'test drive' session?

this thing need 24 bit input :angry. Any chances that u will include spdif into this ?

This post has been edited by studwo: Dec 19 2010, 08:46 AM

chchyong89,
pm sent....need to know the price wise heheh

kindly pm me the pricing ?A

Sorry it's just 16 bit only...and if u need spdif input,u need at least an extra IC and a new PCB layout

i wish this dac can arrived early
cant wait for it
noob question, can i make four hole at the corner? then i can lock it with screw.

Couple of weeks to go.. patience...
4 holes for what?

make 4 hole to lock this dac with screw, then i can screw it with two plastic, make a cloth for it, haha

for pcb stand lah...!!!

ya lah only 44.1 and 48khz/16bit only....no 196/24..

I see what you mean.. You don't have to drill themholes for a PCB stand..
I have plans for it too..

gabanyayaya, ya lor... too bad

This post has been edited by jazzy939: Dec 20 2010, 09:52 PM

16 or 24 is another thing, i am sure at this price you
pay, you hardly to get anything sound better!

Is it possible to include a proper 24 bit input in this thing.. I am willingly to pay extra upto a reasonable amount.

if it's tru using pcm2707/6 then it's impossible for 24bit data....16bit red book standard only...you need another converter with other type of chip

this might help you

http://www.audiophilleo.com/comparison.aspx

This post has been edited by gabanyayaya: Dec 21 2010, 10:44 AM

price?

pm me best price chchyong

Besides using a 24bits controller, Hardware up'sampling is possible after pcm2707/6 by using either AD1896/ SRC4192 or etc. It's
unlike the software oversampling which is totally useless, hardware upsampling make sense but i don't intend to do so, because it's
cost is not cheap. I thinking to make it in the near future with PCM1792/AD1955 with src4192. But the cost will be triply or more
compare with current this one.

This post has been edited by chchyong89: Dec 21 2010, 04:15 PM