thank you very much, explained pretty clearly.

I'm new to speaker area, so I have a headphone set (computer-audiogd nfb10se-audeze lcd headphone.) And the audiogd can also be used as preamp. My question: if I want to make a speaker setup, how does it work?   Computer-audiogd nfb10se- AMP?-speakers or Computer-audiogd...

I would go for lcd 3 since i can wear only one pair of headphones. yeah i like a higher utilization rate...

The very benefit of HD598 is that it's very easy to drive, You don't need an amp for HD598. Also, I would recommend you to purchase within the range of  $170-200 as I've been keeping an eye on it for long time. 

Could you confirm one thing? I've seen many posts saying that IOS device so far hasn't support apt-x. posts like "http://forums.macrumors.com/showthread.php?t=1442959" Do you hear a difference in the sound when using OS and IOS?   Right now I'm use iphone with px360bt, and my desktop...

Quote: Thank you very much. You said it right, every time when someone tells me it really makes a big difference if I do this or that tweak, I'm always wondering if it's really that big different for general people, or noticeable for serious audiphiles

Thank you guys for the responding. Some of it I can't understand, but from what I sum up, use USB dac isn't that bad. So as a noob I think I'll be happy with nfb 10se using the usb input.

I have a lcd2 rev1, I plan to use NFB10SE, as dac/amp. But a headfier told me that nfb products are very sensitive towards digital input.   Here I quote 'All Audio-GD dacs that I auditioned or owned (NFB-7, NFB-1, NFB-10ES and DAC-19 DSP) were extremely sensitive to digital source quality...

Well looks like pretty much I'm screwed. my laptop doesn't have digital or optical output, only usb port  :(

  I use my laptop as a source and my friend gave me some advice on the input method, I'm totally confused.   I thought all the input methods are the same, or if anything is better, usb input will be since it's more digital? (I know that I don't know anything...)   so could anyone teach...

I use my laptop as a source and my friend gave me some advice on the input method, I'm totally confused.   I thought all the input methods are the same, or if anything is better, usb input will be since it's more digital? (I know that I don't know anything...)   so could anyone teach me...

suggest price for hd555 is below 100 for brand new. below 200 for 598 brand new.

555is good, but 598 is great! The improvement is very big. They are both extremely light and comfortable, and they don't require amp.

http://www.headfonia.com/the-upgrade-fiio-e17-aspen/   look at the article. it says e19 beats down e10

You don't need e9, 598 is very easy to drive.

What about audio gd nfb10se at 549?

I think the price is a bit awkward, since 999 is pretty close for a used HD800.

This article is like 10 years old

I bought HD650 half a year ago at amazon, it was 430 at that time, but the price has been going down fast, now it's around 350 for a couple of days. I think it's a good price for that, or you can always buy it cheaper at For Sale Forum. I suggest the second, because a well maintain HD650 is as...

That's alright. I have all I need to know now, thank you. It all started the other day when my friend bragged about how his files are all 1411kbps and mine are all below 1000. Now I'm not upset.

No they don't need to, or at least HD598 doesn't need to, so they are convenient. IMHO,I believe movie headphone needs to be 1  light, no one wants to wear a heavy cans like LCD2 for 2 hours                       2   convenient, just put on the headphone and use, no need for amps            ...

Very well written. Thank you so much. So is there anyway to tell if a lossless file is of good quality, in terms other than bit rate. Could anything go wrong when the data are ripped off the cd and converted to flac.

I just confirmed from other source. Thank you very much!

Oh you mean since most cds are 16bit/44.1khz, so if I rip them off to wav, they're 1411kbps. But if I convert the wav to other lossless formats like ape,flac, they won't necessarily be 1411kbps because of that?

It's a wav file with a cue file. the foobar shows all the songs in it are 16bit/44100hz