What are the circular small stickers that come with the FiiO E10K? I can't seem to figure out what they're use is for

Looking for a budget AMP/DAC combo for my pair of Denon d2000's. I will be using these primarily with my microsoft laptop.   I listen to classical, hip hop, r&b, metal, and EDM, basically everything!   Also, I was wondering if I even needed a DAC? Should I get a DAC/AMP combo or just a...

It seems that in every thread I post in, the website automatically forces me to subscribe to it. Is there any way to turn off this setting?

Okay so when users refer to the quantity and the quality of bass what exactly are they referring to? Also, when one refers to a headphone possessing "good bass" does that mean that the frequency extends very low or instead that the bass is punchy and tight, controlled?

Going to New York City in August pretty soon and looking for a decent portable headphone in the price range of $100-$200. It can be IEM or OEM but preferably OEM since I think that will have better sound quality. I can't take my Denon D2000 on the trip because it is too fragile, so the headphone...

I'm looking for a very durable MP3 player that will last me a long time. The storage must be between 64gb or more because I currently have a 32 gb ipod touch that is running out of space. I only store high quality 320kbps mp3 files so I don't need an mp3 player with games and useless apps that I...

What's a good IEM that is good for running? My head is going to move a lot so I need headphones that will clip on to your ear, but I also want good sound quality as well. A volume control switch is not needed, but it would be nice.

Do they have the same purpose?

Just received my Denon AH-D2000s and am currently listening to some dubstep. All I really have to say right now is that the low and high end are remarkably better in all aspects in comparison to the AudioTechnica M50S - however, the mids are a bit recessed as far as I can see... with a...

There's a distinct crinkling sound in my Apple Lossless (ALAC) files... I'm not sure if it's due to my headphones or the portable rig that I am using just is not capable? My current rig is iPod Touch 3rd Gen. 32g -> FiiO L9 LOD -> FiiO E11 -> AudioTechnica M50S

Two days after receiving a confirmation e-mail after placing an order on Denon AH-D2000's, I get another e-mail by the "J&R Credit Department":   "We received your order and we attempted to process it, but the credit card you have offered is issued by a bank outside the United States...

Is it true that the high power of the FiiO E9 will cause low impedance headphones like the Denon AH-D2000 to sound bad? In other words, will an overly powerful amp cause low impedance headphones to sound worse than a weaker amp?

So I just finished decoring a Shure Olive and the problem is that the hole is too big for my RE0... I also decored it pretty well and there is only a very thin layer of foam left on the original nozzle (about 1 MM perhaps? or less...). I was wondering if I could apply glue to the inner and...

For example, the FiiO e7, I'm thinking about buying this, but does it work as a DAC AND an AMP at the same time? I think I read before if you plug it into your computer it is only a DAC and if you plug it with a DAP it's only an amp, but that doesn't seem to make much sense...

I know e5 is just a headphone amplifier but the e7 is a USB+DAC. What are the differences between just an 'amplifier' and a 'DAC'?

Which one is better? And what is the recommended amp I should use? I'm really looking for nice, quality portable IEMs great for listening to mostly Metal and Electronic.   So far the RE0 has gotten better review but I just want to make sure, I am new to the headphones world (been using...