A Portable Headphone Amp Masterpiece Fiio are well known as a specialist audio company who make superb audio accessories they are also well known in audio circles for making great value products with incredible sound. The FiiO E12 Mont Blanc is a high performance portable headphone amplifier which has a high quality built-in processor and power amplifier in a super slim body. What does a headphone amplifier do and why would I want one? In simple terms it takes the sound signal from your portable device or smartphone and amplifies it. The FiiO E12 will make your headphones perform like they were plugged in to a high end stereo. You will also hear lots more detail and sounds in your songs that you didn’t realise were there. The E12 allows you to use larger more demanding headphones with your portable device from 16 ohms up to 300 ohms which would sound quiet and weak without the addition of an amplifier. The AMP also helps increase the volume from players that have a volume limiter (most new MP3 players and phones) so higher impedance headphones can be played at a reasonable level. The design of the E12 is stunning the outer shell is made of machined aluminium with a generous amount of internal fixing supports to keep the board firmly in place. The Techie Bit The E12 features a Gold Operational Amplifier (OPAMP) pair with a near zero level of distortion (0.00003%). The LME49710 AMP used in the E12 was designed specifically for high end Hi-fi Audio products by the TI Company based in the USA. The rest of the AMP isn’t stinted on either featuring a WIMA capacitor ALPS potentiometer and a high quality battery. The built in lithium-polymer battery is capable of providing a very strong power source to the amplifier with 22V of working voltage. The total maximum output can reach as high as 850mW. The battery can be charged via a USB connection or pl.