[gus6464]

Quote:

I have a pair of DT990/250s and the E7. Will this make a noticeable enough difference to justify buying it or would I be better off getting a pair of higher ohm headphones first?

250ohm and pretty much any DT770/880/990 need an amp to sound their best.

 

[TomPickle]

I've got a pair of 250 ohm DT770s, which would you suggest getting first, the E7 or the E9?

 

[gus6464]

Since you get a discount if you buy the e7 and e9 together from micca I would say get both 

 

[playingwithfire]

I think I read it somewhere but how much louder is the 1/4 connector vs. the 1/8?

 

[Riku540]

The 1/8 is -90db for portable headphone/IEM use. It says it right on the face of the E9. You wouldn't want your headphone hobby to make you go deaf now would you?

 

[playingwithfire]

Quote:

The 1/8 is -90db for portable headphone/IEM use. It says it right on the face of the E9. You wouldn't want your headphone hobby to make you go deaf now would you?

2 things
 
1. WHAAT?! I CAN'T HEAR YOU!
 
2. I got my HD 650 cable for the HD600 today which ends in 1/4 instead of 1/8 and honestly unless the cable somehow change the volume level I don't think there's a huge difference in sound, isn't 90 db quite a bit?

 

[Riku540]

You underestimate the sensitivity of IEMs. Not to mention; the E9 is unbearably loud at 50% volume with 600 ohm headphones; imagine that going straight into your ear canal sealed, and lord forbid the volume dial go any higher.

 

[playingwithfire]

my e9 has never been past 10 o clock and that's loud

 

[Jack C]

The 3.5mm output has 33ohm resistors in series with it, how much attenuation this causes depends on the impedance of the headphones you are using. In the case of HD650s that are 300Ohms, the resulting attenuation would be very small. But if you were using 16Ohm IEMs, there would be about a 4.8dB attenuation.
 
One key function of the 33Ohm resistor is to protect the low impedance IEMs and listener's hearing, but another less critical but still very important benefit it brings is additional granularity from the volume knob. Without the 33Ohm resistor, even a very small adjustment on the volume knob would result in a huge change in the sound level output. With the 33Ohm resistor in place, the user now has a wider range of usable volume knob travel, allowing finer tuning of the listening volume.
 
Jack

 

[Mad Lust Envy]

Figure I drop this here, as this is the main E9 thread:
 
Can anyone even discern the SQ difference between the 3.5mm and 6.3mm input with their 600ohm headphones? I certainly can't, but I still use the bigger input for the piece of mind and it's easier plugging into.
 
I'm also wondering who is brave enough to start rolling opamps. I'd like to know which opamps would soften the treble a little. Not a particular issue with the E9 itself, but looking for opamps that will smooth out the DT990's treble a little. It's very minor annoyance that pops up with certain songs.
 
I myself have no idea where to start, so I wouldn't ever dare try this alone.

 

[lrawrl]

              

 

[lrawrl]

Quote:

The 1/8 is -90db for portable headphone/IEM use. It says it right on the face of the E9. You wouldn't want your headphone hobby to make you go deaf now would you?

lol. the -90 on the surface of the E9 is for the volume knob. At the lowest setting, the volume is playing at 90 db less than the actual source volume coming into the amp. The zero on the other side is saying that there would be no limit placed on the amp's ability to drive the music.

 

[Kevinchen]

Sorry.the first attached links can not open in china,please check it.
 
thks.
 
 http://www.youtube.com/watch?v=ERhxmzQR6xA

 

[lrawrl]

never mind this post. my concern/question actually relates to my headphones

 

[shabs1985]

has anybody else had this issue wwoth the e7?
 
Quote:

weird, im starting to get crackling when watchnig youtube videos. when i watch something in 1080p, the sound coming from the unit crackles and dies aftre 2 seconds. i have to replug the usb to get sound again  (only for certain videos e.g. http://www.youtube.com/watch?v=ERhxmzQR6xA).
btw i have the e7 with the front panel made of fully glossy plastic :?
http://anythingbutipod.com/2010/03/fiio-e7-headphone-amplifierusb-dac-review/