The FiiO E18 is a portable DAC and amplifier designed to enhance the audio experience of both mobile devices and laptops. It employs a sophisticated amp section to drive a variety of headphones effectively, along with a good quality DAC chip for superior sound processing. The device is compact with a sleek design and features a user-friendly OLED display that presents relevant audio information clearly. A considerable upgrade from previous models such as the E17 and Q1, the E18 offers advanced audio capabilities while maintaining a solid build quality with a brushed aluminum finish that is both aesthetically pleasing and durable. It features multiple input options, including USB and AUX, and allows EQ adjustments to cater to users' specific sound preferences. The E18 is also designed to minimize noise and channel imbalance across various gain settings, making it suitable for a wide range of headphone impedance levels. Overall, it strikes a balance between portability, performance, and user experience, proving to be a reliable option for audiophiles on the go.