Quote:
Those are voltage step up noise from the power switching circuit. To get the full benefit from the opamp, E12 must runs on very high voltage with a true dual-supply. The original idea was the AAA Li-ion batteries pack that give +/-14V that needed to be charge separately, but it was discarded in flavour of the current +/-11V batteries setup (there was a vote / opinion gathering of some sort if any of you remember) - lower in voltage, but still high enough to do the job, and can be charged by USB. However, to get the 5V USB charging to work on a +/-11V system, you will need a step up circuit and like any circuit of this kind, they tend to be noisy. In exchange however, we are spared from carrying a dedicated charger or the inability to use when charging. I'll say it is a compromise for the better.
Ah, thanks for the clarity on the slight noise from the power switching circuit. Sometimes this is a little noticeable on my e5, too. It's not a big deal and sometimes I listened to my E5 while charging (I haven't charged my E12 yet), but I prefer not listening during charging.
I do remember the battery vote, I voted for a charging scheme similar to the E11 because I have been annoyed by non-replaceable batteries going dead in devices in the past, like my first iPod. I also don't like the charging noise and would rather wait. That said, those are just my preferences, and a lot of people agree with your view that this is a better compromise. Not a big deal either way, though I think I want to use my E12 longer than Gavinfabi
------
Boweii,
I like your unboxing video too
I think I forgot to show the 3.5mm connector cable in mine, and when I posted my video here I didn't know how to make it display in-post from my iPad.
------
Typhoon,
I think the analogy he was trying to make was "some people like big tires, some like
small tires." If you live in the country, you might like big tires on a truck to help you get out of mud and snow, if you live in the city small tires are nicer on fuel efficiency.
In any case the feature is there if you want it, but you can switch it off if you don't. I can think of a few songs where I'd really like some crossfeed (mostly pop songs, new and old), but mostly I'll leave it off. No harm done
------
Mani ATH 87,
My mother's Android cellphone is bigger than the E12. Unless you are hiking all day and every ounce of weight is important to you, the E12 is compact enough to fit with an iPod Classic in my back jeans pockets. If your pocket can hold a wallet and phone simultaneously, you can probably fit an E12 and PMP together in there. The wiring might be a little tricky though (I still think straight plugs are least likely to become unplugged in pocket), and of course any PMP strapped to an amp is going to make a bulge in your pocket.
It's not perfect, nor as convenient as an E6, but the E12 is definitely portable and transportable.
