Pros: Adds a great body and HiFi feel to the sound. Light and portable. Great soundstage and stereo separation. Bass adjuster.
Cons: Poor battery life. Plastic construction feels cheap. Dock cables are a tad expensive.
Great amp for the money, in my view best FiiO has done.
This is my first amp and really I'm quite shocked at how much the sound quality can improve by just carrying one extra little box.
Battery life and construction could have been improved, but of course that in turn would have added more weight.
I'm sure I will try the E17 in the future, but for now E11 is amazing and fits my needs perfectly.
I'm actually considering buying another one for backup, they are on offer at an amazing price at the moment on Amazon: