Thanks, Sir Iwells!  Actually, your detailed explanation was what newbies, like me, need to understand before buying hardware for our music rig.  I really appreciate it!  A couple of my friends in Manila (who are members of headphiles.org) also mentioned that a balanced amp is ideal for W4...

What do I expect with such a pairing (Westone 4 & ALO V2)? Newbie question still feeling his way around.

I'm currently pairing my W4 with an IPodTouch 4thGen... Do you I need an amp? What should I expect from it when I add it to my rig? Thanks!

What do the Pico dac & the rsa amp add to your listening experience with the W4, Sir? Just like you, I pair my W4 with my IPodTouch 4gen.

What headphones will best compliment the ALO CV2 for mostly alternative & slow rock music? From what I've learned from the previous posts, higher impedance hps are ideal? What brands & models will fall under this category? Thanks!

Great suggestion... Might as well buy & try them...

Thanks for the insight...

Sir, how satisfied are you with this portable setup? I'm planning to go this route for my audio rig...

Mostly, R&B... Sometimes, acoustic...

Between $100-$150

What IEM or headphone can you advise for a newbie using a classic iPod with ALAC files & a Fiio E11?

Thank you, Sir, for that insight... A lot of members from headphiles.org, when I posted the same question a few hours ago, also vouched that the Superlux doesn't really need an amp (unless I already have one). I'm happy to have invested on a good IEM.

Will this IEM benefit from an amp, like the Fiio E11, using an iDevice? Or, can it "stand alone"?

Is an amp still necessary for this IEM when used with an iDevice?

What IEM would you recommend for an iDevice, around the same price range?