Hey all, I'm looking to buy a high quality USB DAC/AMP (under $250) for both my Sennheiser HD 598 headphones and Pioneer SP-BS41-LR bookshelf speakers. Main use being for listening to lossless music. I'm looking between purchasing the O2 + ODAC and the Fiio E17 + EO9K... What else would I need...

Hey guys. I recently purchased an O2 for my HD 650s and I was wondering if anyone here has heard both the O2 + ODAC as well as the Tube Magic D1 with these pair of cans. I'm just kinda curious to know what difference in sound I will hear between the two DAC/AMP's.    James

Hi, I'm considering to buy an ODAC+O2 combo. I'll use it to play the song from computer, and also I'll use it to amp my SONY D50 to sing my headphone.   My question is : Can I use its amp function ONLY (not its DA) ? That is: SONY D50 player  --- ODAC+O2 combo ---- headphone. Can I ...

Title says it all. Which would be the best suited for the HE 400s. How cold and dry is the O2+ODAC for the HE 400 compared to the others. I am currently leaning more towards the Objective stuff.

I haven constantly heard how the k701 are extremely hard to drive. How well wil O2+ODAC drive them?

Hi all,   We are piloting a new price match scheme for the O2 amplifier and ODAC USB DAC in an effort to make the award winning Epiphany Acoustics ensembles available to everyone at the very best price.   If you are interested in purchasing either the O2 or ODAC from an established and...

Hello all!   This is my first post on Head-Fi.  I just got bit by the Audiophile bug and have done some browsing these past couple of days on this site.     I've been looking at various different headphone, DAC, and amp suggestions, and just recently came to the conclusion that an O2 amp...

When you have a O2/ODAC combo, the space for the 2 9V batteries to power the O2 is sacrificed to host the ODAC PCB. So to use it, you will always need a wallwart. Personally, I find this a little impractical, as I use my O2/ODAC with my laptop, and sometimes I find myself in situations where I...

ive heard alot of great reviews on asus essence one,cheap and offers great audio quality, has lots of inputs for different sources (PC,DVD,PS3,XBOX etc.) i can link the asus essence one with my Z5500 Logitech Speakers too. Waiting for the Muses Edition   ive heard o2/odac sounded very boring...

With a budget of up to 150€, I was thinking that instead of getting a good external amp/dac combo for that price, I might get one of the objective devices in combination with a cheaper but servicable companion for about the same price. What should I rather get, an O2 or ODAC, and can you think...

Hi everyone, I'm looking for a (fairly) portable solution as a source for sensitive high-end IEM's. I know that these 3 devices are all slightly different in terms of portability (usb powered, battery powered, ac powered), but for now, I'm primarily interested in advice about sound quality. All...

anyone know which headphone to pick for odac with o2 ?   whats the diff in K501 vs K401 vs Q701 in sound ?

I already ordered the Audioengine D1, but got an oportunity to get some DT880s (600ohm) from a fellow head-fier(stocked!!) but the problem is now I need an amp, I really don't have a budget (as in I have no money) but I'm selling some of my xbox games to cash some money, my budget is around $150...

i got three three headphones: dj100 with m50 pad, hd598 and hd 650. using odac with build in o2 amp. listening to mainly k-pop. j-pop. c-pop. ballad. female voice. the thing is i cant decide which one to keep. cant aford to have all. Going to sell 2 and keep 1. i like hd650 and hd598 more...

The Objective Combo       The Schiit Stack                     The Review   The two perform and sound too close to each other to make any practical differences. The Schiit Stack looks better and costs less.  Get the Schiit Stack.                         For...

Hi everyone,   I'm sorry for such a noob question (I spent a while searching the forums / wiki, Google but haven't come up with anything on point, which makes me think it's so fundamental I'm just coming across as mentally challenged):   I've got some 24/96 FLAC files and trying to put...

What headphones rig are better for Vocals, Rock, Pop, R&B some Jazz some Instrumental? O2 enough power, sound level for HE- 500? not lacking sound quality  for HE-500? Or i should go for He-400 Rig ?

I'm try to decide which to buy, would appreciate and help. I already have Maverick Audio A1, I think the headphone amp is pretty good (not as good as Musical Fidelity X-Can v8, but is good). Main reason I bought is drives speakers also, and been real good job with Wharfedale Diamond 10.1. So...

Which stack would be the best overall for use with my M-100 and the HE-400 once I purchase it? I've been told that the Schiit M&M has a set gain of +5 where as the O2 and ODAC stack gain can be either +1, +5, or +6.5. Honestly I don't know how gain effects headphones so any help will be appreciated.

hi i got the odac build in o2.   used it with my laptop.   foobar>wasabi>usbhub>Odac(build in o2)>headphones   i got a problem, when i listening to music and i use my mouse (mouse>usbhub) when i move it sometimes the sound will get disruption, same if i touch the usb cable from...

Just wondering which colour is the preferred one among Head-Fiers?   I've had the ODAC in both black and silver vesions, and I can decide which one I like best. May you guys can help me decide.   Feel free to post photos of your units.   Cheers

Discovered this yesterday.         Looking at the internal components, this looks like an excellent all-in-one unit.     http://www.ebay.com/itm/FIRE-PHOENIX-DAC-02-CS4398-LM4562-MINI-USB-DAC-Headphone-Amplifier-/180738679826

Question is quite simple... I am trying to get more information about available amplifiers and DACs and as a very happy desktop O2/ODAC owner I am curious if there are any other great-measuring amplifiers and DACs available on the DIY scene. They must be neutral and technically excellent, of...

Unboxing my new JDS Labs O2 Black Edition, full review coming soon:  

I've settled on this unit, now I'm wondering if anyone has any opinions on a headphone that matches well with it.   Primary use will be for gaming and music...I enjoy accuracy in games, and like to hear quiet footsteps, etc...   I've looked mostly at Beyerdynamic 880 and Sennheiser 600...