Fiio E6 Headphone Amplifier

General Information

FiiO E6 is a Portable Headphone Amplifier designed to improve the sound quality and volume of portable audio sources such as MP3 players, iPods, personal media players, mobile phones, laptops, notebooks/netbooks, and portable CD players. As an updated version of E5, it not only retains all of the advantages of the popular E5, but also carries many newly added features and thus provides a substantial boost in performance. As compared with E5, it utilizes a different power circuit to offer true +/- power for the opamp and leads to higher power output, better signal to noise ratio, and lower distortion; three different types of built-in EQ options greatly improve sound quality; innovatively designed volume keys offer convenient volume control; smaller size, lighter weight as well as removable clip make it fit indoor and outdoor activities much better.

- Output power: 150mW (16Ω Loaded); 16mW (300Ω Loaded)
- SNR: ≥ 95dB(A weight)
- Distortion: < 0.009%(10mW)
- Frequency response: 10Hz~100KHz
- Headset impedance: 16Ω~300Ω
- USB power supply port: DC 5V/500mA
- Power supply mode: Built-in rechargeable lithium battery.

Latest reviews

Pros: 2 eq modes and a 2v input, mini usb plug, clip on.
Cons: friction welded case, small battery.
works fairly well and is a pretty cheap entry into micro dacs. it does what it needs to right for what its worth. the friction welded case is horrible though as i have dropped my amp on the cement and it exploded into pieces. slight his if you try to use it while charging. 
Pros: Compact, Two bass boost settings, Decent audio quality
Cons: Build quality downgrade, Low power output, Bass boost a little overbearing


The evolution of the E5 portable amplifier that served as my very first portable amplifier before I eventually returned it in favor of the CMoyBB (and because the volume rocker broke), the Fiio E6 is, in some ways, little more than a sidegrade or de-evolution from the E5 as a total product.

For instance, the E6 is now clad in shiny black plastic rather than the metal and plastic housing of the E5 and also lacks the sturdy metal clip of the E5, instead opting for a transparent plastic clip which, frankly, isn’t as good.

In terms of sound quality, it actually sounds rather good for an amplifier as inexpensive as it is. It has a warm, smooth sound that, while prone to smoothing over some micro detailing, sounds good nonetheless. Though the E6 is prone to mild hissing, you probably won’t notice it once the music gets going.

Two of the E6’s three EQ settings focus on boosting the low end, a feature present on just about every Fiio amplifier I’ve come across. The E6’s implementation isn’t as good as I’d like, however and ends up boosting more than just low end frequencies. EQ1 provides a massive bass boost that can end up muddying up the sound on all but the most bass-anemic of headphones/earphones. EQ2 provides a more sensible boost that doesn’t introduce anywhere near as much mud and is quite enjoyable. The third EQ option is made to accommodate line level inputs from powerful portable players.

The sound overall is warm and smooth and, with the added bass boost, one that will likely appeal to consumers looking for a bit more power than their smartphone or MP3 player alone can provide. With the bass boost off, the sound is mostly clean with a decent level of transparency but nothing to write home about, frankly.

The E6 provides what should be ample power for common loads but simply doesn’t have the output power or current for high impedance loads. In most cases, this isn’t going to be much of an issue since many consumer focused earphones and headphones on the market today don’t need much driving power but the E6 will likely clip before you reach listening levels on heavy loads.

All things considered, the E6 isn’t a bad amplifier, more a versatile but still merely adequate amplifier. But for about $30 or so, adequate more or less comes with the territory. It’s certainly one of the better amplifiers I’ve heard in its price range though, and the bass boost feature is likely to be quite favorable to casual listeners and bassheads who just can’t get enough.

Re-Posted from my site, Musical Musings
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Reactions: trellus
Pros: small
Cons: died in just a few months
3 of the 5 cables it shipped with failed within days. The distributor replaced with an L cable of surpassing quality, but soon after that the damn thing stopped working altogether. Shoddy workmanship all around. Highly disappointed.


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