Headphones / Earphones
Headphone Amps
DAC built-in headphone amplifiers
Fosi Audio/ZH3 All-in-One Desktop HiFi DAC & Headphone Amplifier

Fosi Audio / ZH3 All-in-One Desktop HiFi DAC & Headphone Amplifier

ZH3 is a desktop audio solution with outstanding sound quality.

【All-in-One Desktop HiFi DAC / Headphone Amplifier / Preamplifier】
・Featuring a high-quality chipset and a proprietary fully balanced circuit design, this unit delivers low-noise, low-distortion audio. It serves as the ultimate desktop audio solution, perfectly suited for high-end headphones and active speakers.

【Exceptional Sound Quality】
・Equipped with an AKM4493SEQ DAC, an XMOS XU316 processor, and four OPA1612 operational amplifiers, this high-performance system supports audio formats up to PCM 768kHz/32-bit and DSD512. A custom-developed dual-power balanced amplifier circuit—integrated with multiple ultra-low-noise LDOs and high-quality capacitors—reduces the noise floor to just 1.9μV.

【High-Output Performance】
・Includes both a 6.35mm single-ended output (640mW @ 32Ω ×2) and a 4.4mm balanced output (2570mW @ 32Ω ×2). With three selectable gain levels, it accommodates headphones ranging from 16Ω to 300Ω, making it ideal for everything from in-ear monitors to over-ear headphones.

【Versatile and Flexible】
・Equipped with coaxial, optical, USB, and RCA inputs, along with 4.4mm, 6.35mm, RCA, and XLR outputs, it connects seamlessly to a wide range of audio sources and equipment. It functions as a comprehensive DAC, amplifier, and preamplifier for desktop HiFi setups. A switchable UAC mode ensures high compatibility not only for music playback but also for gaming consoles.

【Extensive Customization Options】
・Offers bass and treble EQ adjustments, six distinct digital filters (including a bypass mode), and two swappable operational amplifiers, allowing you to fine-tune the sound to your personal preference. All functions are integrated into the display, resulting in a clean, premium aesthetic that inherits the design language of the Z series.

■ Chipset: XMOS XU316 + AKM4493SEQ + OPA1612 × 4
■ Interfaces: USB, Optical, Coaxial, RCA, 12V Trigger Input, XLR, RCA, 4.4mm, 6.35mm
■ Outputs: 4.4mm, 6.35mm, RCA, XLR
■ THD: <0.00018%
■ SNR: >121dB
■ Noise Floor: ≤1.9μV
■ Supported Impedance: 16–300Ω
■ Included Accessories
・ZH3 unit
・6.35mm adapter
・12V trigger cable
・Remote control
・User manual
・USB-A/C to USB-C cable
・Power adapter