All this talk of 'clean' outputs is making me sad, since my E9 doesn't sound clean at all (in fact, everything sounds better through the E7).   Has no-one else come across/solved the E9 voltage leak problem (which I suspect is the cause in my case)?

Hang on a sec: The (UK) power adaptor for my E9 has a plastic ground prong - doesn't that mean that it's not earthed at all?

Alas, no, the tingling remains even when it's switched on and in use.   It's currently good as nothing more than a charging cradle for my E7.

Alas, I fear it may not be that simple!   I've indeed already tried plugging it in in two other locations (even in different towns) and yet the problem persists.   Further, I've plenty of other metal-chassied equipment (laptops, hi-fi separates, kitchen equipment etc. etc.) and not a...

Ah, maybe I should be referring to 'leakage' rather than to 'isolation'?

Thanks for the suggestions, everyone.   Still trying to decide - rip-off UK prices vs. inferior sound quality...   Wish there was a ranking of full-size headphones by isolation - I find it a far more important factor than cable length or whether or not they come with a carrying pouch .

Hi all,   The problem persists despite numerous replacement power supplies from the very helpful Amazon reseller.   One major question I have though - maybe someone from Fiio could help me on this, if they're around:   Seems like a voltage leak to the casing BUT the voltage also...

Actually, no I'm not - scratch that.   I'm actually leaning towards a pair of Bose AE1s (that's right, the original Triport model).   People always slate them for being overpriced - here in the UK, I can pick up a new pair of AE1s for about £80 - that's 2/3rds of the price of the M50s...

M50s, eh? Can you believe: they're $115 on Amazon.com (which I use as a benchmark) and £125 on Amazon.co.uk (which I'd have to buy from). That makes them about 1.8x more expensive over here - so annoying, I think I may not buy them because of that (sour grapes, I know, but I've had enough of...

As we all know, regardless of how awesome a pair of headphones, certain social situations require a headphone where the people next to you (family members, small children etc.) can't hear what's playing.   For example, I've a pair of Denon AH-D5000s, which I love, but can't really take them...

Or, thinking about it, have I maybe (quite possibly) got the wrong end of the stick?   Maybe Fiio never says that the E7 supports "line in" - just that all of the talk about "IPod/Fuze line-out connectors" (etc.) gets confusing?

Aaaaaaaah, I see, thanks guys.   So 'line level' isn't a precise definition? Shame - I'd been hoping to use the E7 as a headphone amp for my CD player as well (my E9 is all the way on the other side of the room and besides, it's waiting for a replacement power supply so currently...

Three options: 1. Stupidity (mine), 2. Faulty Unit or 3. E7 Design Flaw? All possible.   We all know the 'Aux In' at the bottom of a E7, however if I plug in a line-level source (such as a hi-fi CD player or the 'Line Out' of my SFlo2), the bass is truly apallingly distorted - the only way...

Thanks for the reply (and to mukulymn too!).   You're right, the hiss on the volume control doesn't bother me at all - kind of relaxing, actually.   What I'm far more concerned about is the voltage running through the casing (at least, that's what I presume the tingling feeling is?).  ...

Has anyone else at all ever touched their E9?   If so, could you possibly let me know if you get the same nasty tingling?   Thanks in advance!

Yes, it does actually, though only a little bit - when there's no signal and I change the volume, there is a (faily quiet) hiss as the knob is turned - I'd put it down to sensitive headphones and the normally dark soundstage, but I'd be very interested to hear if anyone has an E9 that doesn't do...

ps. Please don't hesitate to shout at me if this post should go somewhere else - I've read many threads on Head-Fi in my search for headphones/amps etc., but as I've always been seeking answers, I've never had any knowledge to share back (and hence, my first post! - it all looks "flat" when...

Hi Yall,   Having just bought and received a FIIO E9, I've a question for other owners of the E9:   Try:   When the power supply is plugged in (we're talking UK here, just for reference) but the E9 isn't plugged in to anything else (eg. USB), if you touch it and move your hand across...