The FiiO DM15R2R is a portable CD player built around a discrete R2R ladder DAC, a high-voltage lithium battery, and both single-ended and balanced outputs. It functions as a standalone disc player, a USB DAC, a Bluetooth transmitter, and a digital source for speakers or amplifiers. With THD+N under 0.030%, an SNR of at least 112dB, and flexible analog and digital I/O, it serves listeners who want CD playback in a compact, desk-friendly unit that can also move easily from room to room.

The FiiO M27 is a portable digital audio player designed for listeners who want desktop-class performance in a travel-ready format. It uses Qualcomm’s QCS6490 processor, dual ESS ES9039SPRO DACs, and a fully balanced amplifier stage capable of delivering up to 5000mW+5000mW of output. Android 13, a removable 9200mAh battery, dual microSD slots, and extensive I/O give it a wide operating range—from a standalone player to a desktop hub or digital transport. Its design targets listeners who want a single device that can manage long sessions at home and still travel easily.

The SJY Zeph is an open-back planar magnetic headphone built around a single-piece CNC-machined aluminum structure that houses the driver, chassis, and ear cup as one unit. This design reduces vibration pathways and removes many of the interfaces that introduce resonance in traditional headphones. A 96 × 73mm planar magnetic driver, a 7mm chassis depth, and a dual-profile magnetic ear pad system define how the Zeph approaches speed, control, and tuning flexibility. It is intended for listeners who value low coloration, stable imaging, and a midrange presentation that holds its shape even at low listening levels.