After 125 hours of burn in, I don't know, it feels like the highs have opened up, something that definitely was lacking before, they felt so "tamed" and veiled. Guitar solos and most riffs sounded all right, but just boring, they had no edge to it.   I was actually EQing DOWN the bass, and...

The Headstage Arrow seems like a good match, it's "able" to drive headphones up to 600ohm.  That's what I have in mind to pair the SM64 with, too bad they got delivery problems.

That's the kind of review I've been waiting to get the SM64... Overall, what I've been reading is that the SM64 is like a SM3 with clearer mids and improved highs(smooth like the SM3 but not as rolled-off) and more balanced soundstage. Also, the comparison to the W4 makes it even easier a...

Have you received it back? Does it sound any better with the 4s?

Anyone listened to the SM64 with an iPhone 4s? It would be my main source until I could get my hands into an Arrow 4g + dock cable and an USB DAC cable for my PC. To be honest, I'm more interested in the amp because of the possibility of getting a cleaner signal, than amping to the new SM64s.

Any relation between poor sound quality and lower impendance with the iPhone 4s? I see some some pretty variable opinions about the 4s sound quality, and usually the poor ones come from low impendace IEMs, at around 16 ohm. Such as the Sennheiser IE80 and the Earsonics SM3. I'm asking that...

I would definitely recommend trying the UM3X, they're very similar(I actually had them both for almost a month). What I like about them is their highs, very smooth and excellent for long listening sessions, and they're both mid-centric IEMs.   The um3x however, can sound very boomy with...

PM sent, it should work perfectly for me.   Quote:  

I could use an amp, specially with balance control, but is sounds too complicated for me.   Quote:  

Is there any kind of cable/or whatever that would allow me to balance my IEMs volume? You see, I have a slightly big hearing loss on one ear, and its pretty annoying to listen to music when I'm not at my PC.   I know that rockbox allowed me to do that, but my player is gone.

I dont think so, since the normal SM3 are quite cheaper than the V2.   Anyways, I'll probably be trying to upgrade mine, since they need repair(fell apart 2 months ago, but I've been using anyway).   Quote:  

You did right not to try them before drying them first, otherwise, great chances that they wouldn't be same anymore.   Quote:  

What would you call the most neutral heaphone today? Something around 200~400 USD, perhaps a little less than neutral highs.

Thanks, that is very useful. I'm leaning towards the HD650 since I do get tired quite fast with bright-ish headphones.

Could you give some comparisons between the SM3 x k702 and HD650 ? I'm planning on going for headphones, and they're top in my list.