Very good85/100
- Symmetrical amplification
- Good display
- Compact housing
- Powerful, external power supply unit
- No analogue input
It would be difficult to find a headphone amplifier for 139 euros that can keep up with the sound of the Fiio K11. It really comes into its own when combined with balanced headphones. However, it also delivers a very convincing sound experience in unbalanced mode. However, if you want to utilise the full performance range, you should definitely invest in a balanced headphone cable - the upgrade is...