The Hidizs AP80 PRO-X is a compact digital audio player (DAP) that offers a range of features aimed at delivering high-quality audio playback. It is equipped with dual ESS9219C DAC chips, ensuring excellent sound fidelity with a signal-to-noise ratio (SNR) exceeding 130dB and total harmonic distortion (THD+N) as low as -114dB. The AP80 PRO-X supports PCM playback up to 32-bit/384kHz and features MQA (Master Quality Authenticated) technology for high-resolution streaming. It can decode MQA files up to 8X, retaining the sound of the original master recording. Its capabilities include bi-directional Bluetooth 4.2, supporting advanced codecs such as HiBy UAT, Sony LDAC, and CSR APT-X. The device comes with both unbalanced 3.5mm and balanced 2.5mm outputs, making it versatile for various headphones and IEMs. Additionally, it features a 2.45-inch IPS HD touchscreen for easy navigation. With a built-in FPGA chip, the AP80 PRO-X also supports native DSD playback and aims to minimize jitter for better sound reproduction. Furthermore, it includes practical functionalities such as a step counter, an e-book feature, and the ability to function as a USB DAC when connected to computers or smartphones. The AP80 PRO-X is compact enough to fit in a pocket, with a geometric design that is visually appealing. It presents itself as a comprehensive audio solution for both casual listeners and audiophiles on the go.