you can buy the pcb only from jds labs, no need to GB anymore: http://www.jdslabs.com/item.php?fetchitem=O2PCB

I already got the PCBs,almost same price per unit,but lower shipping cost (if by Pos Laju)

I am quite interested in this amp, but probably going to buy a completed amp instead of building one for myself.

you use local pcb manufacturer? nicee..

So how is the progress now? What is the pricing if get from you? Plan to do a review of my own especially with some current hungry headphone. (not ortho, just dynamic driver that drain current)

As u can see,5 units finished,just waiting for the arrival of casing,next month probably...

Actually I already got my own review,but to be fair and square,need to ask others to review for me...

Reality is,if u are using a 600 ohms headphone with O2,powered it by AC adapter...

But if u not using those high ohms stuff,then powered it by batteries,sure catch your ears...

think he means:

if you are using 600ohms headphone, use the O2 amp with an AC adapter.

if not, then use it with batteries and the amp is sure to fascinate you.

i'm interested to review this, but i'm in johor

got pimeta to compare this amp to

Thats the thing. Way too open ended. Dont really understand the true meaning.
How much to build/ buy pimeta?

If the price of the amp falls within the amount that i have, i might consider buying it to test out. Spend too much already. Anyway how is the speed? Im in seriious need of a fast amp for my jh. What 600 ohm headphone you have tested now.

i'm interested to review this, but i'm in johor

got pimeta to compare this amp to

if i cn get it below rm 400 completed i'll just buy n do a review n keep it

ok pm me details ok thnx man n power up full size ? i mean have power for up to how many ohm? i know its kinda personal preference but just roughly cn it drive?

wow if it can give dynamics to the t1 that shows something

wow if it can give dynamics to the t1 that shows something

hongrui, if you have o2, please let me try it for some time

ooooh we're designing the product with approval of nwaguy..
currently doing the industrial design for the product.

It's all planned for 2012 even the ODA

Digital signal there is a special chip that is license by apple.
Plus need to pay royalities... mahaal siol.

We small company cannot sell alot of things like ALO/Wadia/Fostex pricing..
We are just aiming to use it as a Laptop accessories for Uni students who are away from home in boarding homes

this O2 can drive akg well? anybody in KL area got this?

Some forumers already got the blank PCBs,not sure they build it already or not....

am curious about this.  if this O2 can really drive akg

am curious about this.  if this O2 can really drive akg

Leolabs Nwavguy o2 impressions/comparisons

Setup = Sansa Clip+, Hifiman re262, Soundmagic PL-30, O2 amp, Govibe Mini Box Amplifier

Clip+ and re262
>Re262 sounds thin, bass is anemic, highs are dull, mid is the only thing present. Overall, the sound presentation is like looking at the sunset through a telescope. You can hear the voice, but the rest is cut off. Notes sound like they are covered by a thicket veil.

Clip+ and Govibe MBA and re262
>MBA has V-shape sound according to some other reviews. So bass is slightly empowered but not a lot, (even my soundmagic  pl30 has more sub bass), highs are more prominent and mids have retained their position. Overall the sound is better defined. Notes are revealed by going under the blanket. But its a bit dark under the veil.

Clip+ and o2 and re262
>The sound is clean, squeaky clean. Govibe mini box has a tested THD+N of 0.008% which i consider pretty good. But the o2 has THD+N 0.0016%. I can hear the subtle differences and realize it is too clean. I like my songs a bit dirty, rugged and rough. They sound musical in their own distorted way.

Bass is sharp or tight, compared to the MBA (honestly prefer a bit of messy bass).
With o2 its like listening to your friend talk in a sound tight room, there's no fan, or fridge sound running in the background. There is no air or space between me and the vocals. It sounds like the sound is coming directly from the instruments without having any interferences.
Highs are sweet and unobtrusive. The veilis lifted and what a sterile sound it is. Everything is revealed and nothing is left hidden.

Leolabs did a good job making the amp and delivered it fast.

Build 8/10         
Looks 5/10         
Portability 5/10
Sound 10/10

Thank God these are made for the ears and not the eyes. Joking, they aren't too bad looking.
They have wings too but why can't they fly?

can't do muc about the dac, i guess as it's very difficult to ensure clean soldering of the dac, diy style.

nwavguy did mentioned he did not want people to dispute the odac because of a bad soldering job, so the only way to qc the product is to ask for a 3rd party to manufacture assembled boards.

btw, i'm looking forward for his oda+odac combo. might be the best bang-for-buck audio amplifier since fiio came out.

what is the price for odac?

Just got my ODAC, it is small and compact, really easy to take to anywhere, ofcause it sound very good and detail also.
Only complain is the output is a bit low, but mating with O2 is perfect.

Can this small item drive shure se 535 iem properly ?

It is design to drive most of the h/p, it shouldn't be a problem to drive shure se535. You can google around, I am sure some shure owner has mention it some where in Internet.

Nice casing....
Are these portable....I wonder...
Sorry for this stupid question.cause I'm a newbie....

Xdd...great plan
Battery consumption or rechargeble??

not bad wor this amp
really that transparent ar ?

i would like to ask a noob question, do those active speaker with amp built in got performance improved by this little amp?

if my dac able to drive my 56ohm headphone in 40% player volume, do i still need this amp?

i got a ud100 ald, powerful enuf to drive headphone, just wonder is it worth to add on this amp> ...so basically this amp suit for headphone user only? im using both speaker and headphone, IEm

lol, btw im at nibong tebal, i noe u at BM but no car go there ...haha