There are improvements to be had, but don't expect a huge difference.
Seeing that you already seem to have caught the deadly upgraditis, the E7/E9 is the next best logical step seeing as it will take care of your M50's and future purchases. 
There are improvements to be had, but don't expect a huge difference.
Seeing that you already seem to have caught the deadly upgraditis, the E7/E9 is the next best logical step seeing as it will take care of your M50's and future purchases. 
quick question, the fiio e9 amp, can i stick my electric guitar in it and listen to the music through my headphones?
no
No u cant,
Both outputs on the front are made for Headphones, the 3.5 and 6.3 mm
There are amps that can do this... guitar amps...
In case anyone was wondering, yes the E9 can drive the T1, not as well as some of the fancier amps I heard recently, but certainly acceptably. I'm listening to them off the E9 as I type this in fact :)
Thanks, that's interesting news!
Not news. This has been posted in various E9 threads over a month ago:
http://www.head-fi.org/forum/thread/525901/london-mini-meet-impressions#post_7095642
Thanks a lot for that link, Riku! Had missed it somehow.
yeah i know, i just have an electric guitar in a closet with the thick lead but no amp. oh well
Acutally, I don't see why you can't. Just plug your guitar into the Line In (3.5mm adapter necessary) of the E9 and your headphones into one of the headphone jacks...unless I'm missing something. I've done this very thing with my FiiO E5!! The only problem is that guitars have a mono jack so when you listen through your headphones you only hear audio on only either the right or left, not both.
How would the sound quality differ between listening to music straight out of a portable music player(cowon j3) with ath-m50 (which I hear does not need an amp.) and listening to music on my computer with e7 or other uDAC connected to it with the same headphone? Would the difference in sound quality be great? I asked in the portable source forum but no one is answering, so I am a little desperate to know... If there is no difference, there is no reason for me to get a DAC and be limited to listening to music on computer when the portable solution can give me the same sound quality...

Acutally, I don't see why you can't. Just plug your guitar into the Line In (3.5mm adapter necessary) of the E9 and your headphones into one of the headphone jacks...unless I'm missing something. I've done this very thing with my FiiO E5!! The only problem is that guitars have a mono jack so when you listen through your headphones you only hear audio on only either the right or left, not both.
It will probably work, but not well.
In any case I wouldn't want to run that through my E9...

How would the sound quality differ between listening to music straight out of a portable music player(cowon j3) with ath-m50 (which I hear does not need an amp.) and listening to music on my computer with e7 or other uDAC connected to it with the same headphone? Would the difference in sound quality be great? I asked in the portable source forum but no one is answering, so I am a little desperate to know... If there is no difference, there is no reason for me to get a DAC and be limited to listening to music on computer when the portable solution can give me the same sound quality...
There will be a difference but not a significant one by any stretch. I wouldn't worry about it until your next headphone upgrade.

FWIW, I think the E9 has great connectivity: it has a 3.5 mm line in jack, RCA line out jacks and a 3.5 mm pre-out jack, as well as a USB port for E7 docking. I use the E9's pre-outs to drive my active monitors when I'm not listening to headphones, and it works great as a DAC/pre-amp (Edit: with the E7 docked, of course). Whenever I unplug the headphones, the output is switched to the pre-out jack and vice versa. Very convenient.
This might be unrelated to the e9 topic, but just out of pure curiosity, can you explain to me why you do that? I thought, according to my newbie knowledge base, that you'd use the amp to "amplify" the analog signal so the hard-to-drive headphones/speakers play the music better? What is the benefit of using a pre-output? And if it's pre-output, that means the signals are not amplified, right? so no amplification is done in E9's part? Is this the same as using E7 only?


How would the sound quality differ between listening to music straight out of a portable music player(cowon j3) with ath-m50 (which I hear does not need an amp.) and listening to music on my computer with e7 or other uDAC connected to it with the same headphone? Would the difference in sound quality be great? I asked in the portable source forum but no one is answering, so I am a little desperate to know... If there is no difference, there is no reason for me to get a DAC and be limited to listening to music on computer when the portable solution can give me the same sound quality...
There will be a difference but not a significant one by any stretch. I wouldn't worry about it until your next headphone upgrade.
Just to clarify, do you mean to say that a better headphone will let me better see the difference in the quality of digital to analog conversion different DACs (whether it be one in my J3 or an external DAC like e7) will render? And so if I do get a better headphone, would the difference be great enough to be considered significant?