Fiio E11K - Kilimanjaro2 - Portable Headphone Amplifier

Model #E11K

Fiio e11k 1
Fiio e11k 1
Fiio e11k 2
Fiio e11k 3
Fiio e11k 4
Fiio e11k 5
Fiio e11k 6
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Packaging Info

Package Weight 0.4 lb
Box Dimensions (LxWxH) 5.1 x 5.1 x 1.0"

Input1/8" (3.5 mm) stereo aux

Volume Control ALPS potenitometer
Frequency Response 20 to 20,000 Hz
Crosstalk ≥72dB(Gain=H)
Signal to Noise Ratio > 108 dB
THD 0.004% at 1,0000 Hz
Channel Imbalance
Balance Control GAIN=L:Balance=0.3dB
Charging Time 4 hours
Power Supply Mini USB Port
Gain GAIN=L:Sensitivity=2.4V
Operating Time Up to 16 hours
Power Input 5 VDC at 500 mA
Input Impedance 16 to 150 Ω
Output Impedance
Output Power 270 mW (32 Ω)
450 mW (16 Ω)
Output Current Limit 92.6 mA
Output Voltage 8.67 Vp-p
Dimensions 3.59 x 2.20 x 0.51 cm (91.2 x 56.0 x 13.0 mm)
Weight 3.2 oz (92 g)
Battery Capacity 1400 mAhH
Output 1/8" (3.5 mm) stereo headphone
User Reviews
17 August 2014

If you think the only purpose of headphone amplifier is to make a sound louder, you will be in for a big surprise to discover how much it can shape the sound and contribute to improvements in details, soundstage, etc.

Advance mp3 players.34750316
25 April 2018

I purchased a Fiio A3, there was a good reduction on the price because the box had already been opened, but everything was in very good order and looked as good as new.The amplifier itself is smooth to the touch and looks well made. I like the addi ...

Advance mp3 players.34750316
26 September 2017

I'm going to keep this short and sweet. I bought this to amplify the sound for my Cowon Plenue D and it did tremendously! Awesome job Fiio and AMP3 for the service! Only thing is that the battery life doesn't last that long for me since I have it on ...

2 August 2017

Good quality cable that can not be used with the casing.

1 August 2017

Purchased this to increase the volume output whilst using the AUX in my 2006 Range Rover Sport with Harman Kardon, which it does very well indeed as I'm now able to use the same volume level as the other sources such as CD, instead of having to turn the volume significantly higher.

1 August 2017

Very nice little headphone a treat.

4 July 2017

Used with an iphone 6 not really that much of an improvement in volume levels from the phone itself, bass boost is reasonable but not great, a bit disappointing really for the price.

24 June 2017

I've had the Fiio A3 headphone amp over a year or so now and use it with my Bose QC25's and my Shure SE535 iems. I have to say it's been a year of listening pleasure whatever I've been listening too, this little amp is remarkable with what it can produce, the treble is clean, bass is beautiful and...

20 June 2017

Opens the sound up adds a touch of clarity and bass boost is very subtle. Paired with good headphones it makes them sound even better Makes my old average Senhieser sound better

20 June 2017

This is the first amp that I have bought and I love it! It does exactly what I would expect. The amp is very well made, portable and most importantly it improves the sound of what I am listening to subtly.

Product Highlights
  • 450 mW at 16Ω Power Output
  • Fully Discrete Bass Boost Circuit
  • Approximately 16 Hour Run Time
  • 1400 mAH Rechargeable Battery
  • 20 to 20,000 Hz Frequency Response
  • All Aluminum-Alloy Body
  • Shields Against EM Interference
  • OPA1642 Voltage Pre-Amplifier
  • AD8397 Power Amplifier
  • Low - High Gain Toggle Switch
Average Expert Score
Average User Score
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