Fiio's limited edition, E12 DIY version comes with swappable amplifier components to allow users to mix and match for ideal sound combination. E12DIY comes with a high voltage, low internal resistance power circuit, with dual 11V rails (+/- 11V);
dual balanced power supply design eliminates the need for coupling capacitors, avoiding loss of audio
frequencies and raising the dynamic range. High capacity 9.7Wh (880mAh/11.1V) Li-polymer battery
comes with smart charging circuit that adjusts charging current dynamically
according to the connected power supply's current ability.
E12DIY can attain 750mW@32?, 150mW@300? (using OPXXX+BUFXXX combo), satisfying the power requirements of most headphones on the market
Simply use the supplied hex key to unscrew the back cover and pull out the case to access the E12DIY main board. Note: Please turn off the unit and disconnect the USB power connection before opening the unit. Since the nature of the product, this item cannot be covered under manufacturer's warranty, once you open the amplifier unit and switch with amplifier components.
E12DIY comes with 7 high fidelity, ultra-low distortion op-amps and buffers: Including four op-amps: AD8620, AD797, OPA1611, OPA604and three buffers: BUF634, LMH6321, LME49600for a total of 12 different stock sonic configurations.
Users can also use the supplied adapter PCBs to install other op-amps and buffers for infinite variations in sound.
Please double-check for correct orientation of op-amps and adapter PCBs before installing the op-amps and the PCBs onto the main board and re-check after installation. Installation with reversed orientation may destroy op-amps and the E12DIY.