[digitalmind]

Can a mod please put a 56k warning in the topic? Thanks.

I will update this post lateron tonight or tomorow night. Posted here isn't half of what's available.

For now this is all I can post here. There is much, much more to be found there. Better descriptions, links, pictures, etc, all coming up.
Please note that the prices I mentioned come straight from the forum and don't include shipping or taxes. The information and images come straight from Erji.net, a chinese headphone forum. I get the information from a very badly translated version from Babelfish, so there I could've made mistakes.

[size=medium]Foreword[/size]
I came across a WXPH-12J headphone amplifier on a local auction site for a very low price. Before I researched it I bought it, going from looks and price alone. After that, I googled it and came across a chinese headphone forum, Erji.net. Babelfish doesn't do much of a good job, but two things are clear to me: there are ALOT of very nice toys built there by people selling for VERY little.

I don't think I'll be able to cover all of them, but I'll give it a shot.

First up, the thing I scored.

[size=medium]WXPH-12J:[/size]

Looks like a very nicely built headphone amplifier. Uses a Alps pot so components wise it can't be bad. Puts out roughly 100mA. According to a member there is slight noise when running on half volume using a K501, but it's too loud to listen to. I'll be able to comment on it better once I receive it coming weekend. It's price on the board there, new, is 660 Yuan, or $83 USD. Seems like a stunning price for the components used and the quality of the casing. I purchased it from a chinese guy living in The Netherlands. He's also willing to help find someone on the Erji board who speaks english. I'm not sure if there is some of you are interested in purchasing some of the below items, if you are either post here or PM me and I'll see what I can do.

Someone is actually using it in a K1000 rig! Makes me wonder about how good it actually is, I hope it is THAT good.

[size=medium]WXPH-20:[/size]
The bigger brother of the one above. Designed specifically for the AKG K1000.
Looks like a balanced system. Price: 1980 Yuan or $250 USD.

[size=medium]Yulong Audio Mini Dac:[/size]
Looks like a DAC with built in headphone amplifier aswell as loop-out. Looks very well built! Uses a PCM1798. Total signal to noise ratio is more than 110dB.
Price: 1600 Yuan, or $200 USD!!

[size=medium]TM-1:[/size]
Tube amp. Uses Alps-27 Pots. Designed using a K501, HD-580, HD-600, and HD-650. So I assume it won't fair that well with low impedance headphones, but that's just a guess I'm making here.
Price: 1600 Yuan, or $200 USD, if you purchase 5 or more units the price drops to 1500 Yuan a pop.

[size=medium]Minibox CL:[/size]
Price: 268 Yuan, or $34 USD!

[size=medium]Minibox E:[/size]
Bassboost, and possibly crossover?
Price: 578 Yuan, or $73 USD.

[size=medium]Crystal Dac:[/size]
Possible Zhaolu killer? Should be neat to see how it fares. Looks very, very well built. Coax and toslink in, lineout RCA aswell as balanced.
Price: 1880 Yuan, or $237 USD.

[size=medium]DP-1 USB Dac:[/size]
Price: 680 Yuan, or $86 USD, for Dac with built in headphone amp, 580 Yuan for pure RCA out!!

[size=medium]Minibox D:[/size]
Small, smaller, smallest. Beyond that there is the Minibox D. Doesn't look like a very advanced amp but it is tiny. I want one.
Price: Don't know.

[size=medium]Minibox BS[/size]
How good can these pocket amps get? This looks like one serious amp in one very small package. I'm amazed at what they can cram into such a small case.
Price: 968 Yuan, or $122 USD.

[size=medium]Mini EPH[/size]
Another pocket amp.
Under 32 ohms loads outputs about 350MW
Under 64 ohms loads outputs about 490MW
Under 300 ohms loads outputs about 300MW
Price: 260 Yuan, or $32 USD. WOW! Seriously, this price caught me offguard.

[size=large]More coming up![/size]

Cheers,
Rik

 

[ap3rtis]

wow, those prices are amazinggggggg. any info on ordering?

guess I should of read your post better oops. I'll look into these for sure though.

 

[digitalmind]

[size=medium]The Music Beverage Bottle[/size]
This thing looks hot! Tiny, usb, amp, battery powered with charger. Awesome. And look at the price.

Price: 300 Yuan, or $37 USD. Seriously. Rediculously. Cheap.

[size=medium]Little Dot T9[/size]
Now there's a name we've seen before. But has anyone seen this little dot? It looks cool, speaker outputs instead of headphone out?
Price: ??

[size=medium]Sweet Potato AE-2[/size]
(Think Babelfish screwed the translation again.)
Looks like one filled portable amp. The image of the insides looks very, very impressive.
Price: 458 Yuan, or $57 USD.

Added some prices and added alot of items. Split in two posts since I'm not allowed to place so many images in a single post. I'm seeing if the chinese man from which I bought my amp can help me find an english speaking contact on the forum.

 

[philodox]

Neat stuff... If you can find any more info on that Yu Long Crystal DAC I would appreciate it. Looks interesting.

 

[digitalmind]

That makes two of us then, if I was to buy anything it'd most likely be that one.

 

[3lusiv3]

Yeah, the Crystal DAC is the one that interests me.

edit: what url are these from?

 

[juzmister]

I'm interested in the Crystal Dac to, wonder where we can get them from...

 

[philodox]

It is 220V... I wonder if there is a 110/115V version?
We need a chinese speaking head-fi'er to check out audio-sz.com as it looks like this can also be purchased as a DIY kit.

There are some pics of the internals here. Looks like it uses the CS8414-CS DAC chip... anyone know anything about it? Can't get a good look at the OP amps on the board, though they start with 'OPA'. I wonder if they are used for the output stage or as a buffer?

EDIT: Actually, I think the CS-8414-CS is the reciever chip... the DAC is a CS-43122-KS. [Datasheet]

EDIT2: Things I would like to find out: Is it a switching or linear PSU? What voltage does it need? [Would be interesting if it took 12V or could be modded to take 12V easily for SLA battery power] Is the output stage balanced straight from the DAC?

 

[Romanee]

That's entirely too much info to sort out in a hurry.

The prices are frighteningly low. Now SQ and stability remain to be discovered.

Forget 56k alert. How about Cable Modem/DSL/T1 alert?!!!

Thanks for the posting work, in addition to the discoveries.

 

[milkpowder]

I'll update this as I translate it bit by bit. Sorry if it takes a while because I'm not used to reading simplified Chinese.

I think you can DIY:
http://www.audio-sz.com/viewthread.p...extra=page%3D1

This is for the Version 5 of the dac.

Quote:

1：核心套件；主板一张，转接板5张，CS4397南韩产心片一只，CS8414一只。320元

Core package 1: Main board x 1, Relay boards x 5, CS4397 (made in Korea) x 1, CS8414 x 1. TOTAL PRICE 320RMB

Quote:

2：核心套件：主板一张，转接板5张，转接针两条，CS4397南韩产心片一只，CS8414一只。MR7 51*12只， ELNA电解3300U/35V*4，IRF9610/610一对，TL431一对，C2240/A970*4 ,LT1084*2，PE65612数字信号变压器一只PHILIPS高速电容10V/180U7只, ：450元

Core Package 2: Main board x 1, Relay Boards x 5, CS4397 (made in Korea) x 1, CS8414 x 1, MR751 x 12, ELNA 3300U/35V x 4, a pair of IRF9610/610, a pair of TL431, C2240/A970 x 4 ,LT1084 x 2, PE65612 DAC (?) x 1, Philips 10V/180U Capacitors x 7. TOTAL PRICE 450RMB

Quote:

另有适合配它的原装正品06年产OPA604运放。可随板一起购买，18元一只

MY06 OPA604 opamps can be purchased along with the board for 18RMB per chip.

Quote:

仅出售上面公布的两种方式，单独空板没有出售，单独元器件也没有出售，全套KIT也没有出售，单独的元件组 合要求也没有，因为上面公布的是分好包的，直接让我的工作人员发货就行了，如果单独的要求会发错货。最近工 作忙没有时间清理元器件。谢谢各位支持，不好意思。

My understanding of this is that you can't purchase the parts/boards individually. You can only purchase either package 1 or package 2 plus opamps. I can't understand the rest. However, it appears that what he has to say is very important. Please could someone translate it for me.

Looks like they've sold out already. I just read the title of the thread

 

[3lusiv3]

What's that little switch between the digital in and power switch?

edit: on the DAC.

 

[milkpowder]

Looks like there is an improved version of the Crystal DAC here:
http://www.audio-sz.com/viewthread.p...extra=page%3D1

 

[3lusiv3]

The text on the DAC is in English. Why is that?

 

[philodox]

Another fun site that I found searching for more info on the YULONG Crystal DAC:


I tried translating through babelfish, unfortunately the results leave a little to be desired:
"The ear puts the decoding"
"Has a fever the primary device"
"Quality goods inferior goods"
...etc...

This thread has some pictures of the 'Crystal II pure armor class transistor earphone amplifier' along with some shots of the 'Gemini DAC'. Apparently you get a hot asian girl with every amp.

 

[akwok]

Quote:

Originally Posted by philodox It is 220V... I wonder if there is a 110/115V version? We need a chinese speaking head-fi'er to check out audio-sz.com as it looks like this can also be purchased as a DIY kit. There are some pics of the internals here. Looks like it uses the CS8414-CS DAC chip... anyone know anything about it? Can't get a good look at the OP amps on the board, though they start with 'OPA'. I wonder if they are used for the output stage or as a buffer? EDIT: Actually, I think the CS-8414-CS is the reciever chip... the DAC is a CS-43122-KS. [Datasheet] EDIT2: Things I would like to find out: Is it a switching or linear PSU? What voltage does it need? [Would be interesting if it took 12V or could be modded to take 12V easily for SLA battery power] Is the output stage balanced straight from the DAC?

On the eBay link, it says OPA627B. Interesting!

I know you want to Zapfilter that,