A good deal at this price. Paid for my around $380 2 years ago and loved it.
Four-Way LPF for First-Rate Amplification
The X5 3rd gen utilizes two dual-channel OPA1642 chips for its low-pass filtering stage and a custom-made audiophile-grade OPA426 chip for amplification, providing greater output power (up to 300mW under a 32 ohm load) and greater ability to deal with capacitive loads. The outstanding sound quality of the final audio architecture employed in the X5 3rd gen is the result of closed beta users working tirelessly together with the team at FiiO in a quest to make this new X5 sound the best that it can.
Wi-Fi and Bluetooth (aptX) for a Connected Era
The X5 3rd gen brings a number of new features for a convenient wireless experience – 2.4 GHz Wi-Fi allows user to listen to their favorite online streaming services; aptX ensures a low latency, high-quality wireless Bluetooth experience; and DLNA is supported for even more forms of wireless connectivity. With the X5 3rd gen, you can play with your music anytime, anywhere.
Concealed micro SD Card Design
In order to make a more seamless-looking and durable chassis, the X5 3rd gen design team needed to rethink the design of the micro SD card slot. In this new design made of fine stainless steel powder based on new metallurgical methods, the gap between the micro SD card a lot and the rest of the body is only 0.2mm – making for a more handsome body.