The ZH3 from Fosi Audio is an all-in-one desktop HiFi DAC, headphone amplifier, and preamplifier featuring a self-developed, fully balanced circuit with low noise and low distortion. Perfect for HiFi headphones or active speakers, it is the ultimate desktop audio solution. The premium chipset supports up to PCM 768kHz/32bit and DSD512. The 3-stage gain switch accommodates headphones from 16 to 300 Ohms, making it ideal for both in-ear and over-ear headphones. With coaxial, optical, USB, and RCA inputs, as well as 4.4mm, 6.35mm, RCA, and XLR outputs, it can connect to various audio sources and devices. The ZH3 is equipped with bass and treble EQ adjustments and 6 filter types, including a bypass mode and two interchangeable operational amplifiers, allowing you to tailor the sound to your preferences. All functions are displayed on the 1.5-inch LCD screen on the front panel for a clean, high-quality look.