ZH3
Fosi Audio ZH3
The Fosi Audio ZH3 combines high-resolution digital conversion, powerful balanced headphone amplification and dedicated preamplifier functionality in one desktop component. Its architecture uses an XMOS XU316 processor, AKM4493SEQ DAC and four OPA1612 amplifiers, supporting PCM up to 32-bit/768kHz and DSD512. The fully balanced 4.4mm output delivers up to 2570mW per channel at 32Ω, while the 6.35mm output provides up to 640mW per channel. Three gain levels support headphones from 16Ω to 300Ω, while extensive digital and analogue connectivity, UAC 1.0/2.0 support, EQ adjustment, selectable filters and swappable op-amps provide broad system flexibility.
ZH3
Details & Specifications
| Brand |
Fosi Audio |
| Model |
ZH3 |
| Product Type |
DAC / Headphone Amplifier / Preamplifier |
| USB Processor |
XMOS XU316 |
| DAC Chip |
AKM4493SEQ |
| Operational Amplifiers |
4 × OPA1612 |
| Amplifier Architecture |
Self-Developed Fully Balanced Circuit |
| Maximum PCM Resolution |
32-bit / 768kHz |
| DSD Support |
Up to DSD512 |
| SINAD |
≥ 115dB |
| Signal-to-Noise Ratio |
≥ 121dB |
| THD+N |
≤ 0.00018% |
| Noise Floor |
≤ 1.9µV |
| 4.4mm Balanced Output Power |
2570mW + 2570mW @ 32Ω |
| 6.35mm Single-Ended Output Power |
640mW + 640mW @ 32Ω |
| Supported Headphone Impedance |
16–300Ω |
| Gain Control |
3 Levels |
| Headphone Compatibility |
IEMs and Over-Ear Headphones |
| Digital Inputs |
USB / Optical / Coaxial |
| Analogue Input |
RCA |
| Balanced Headphone Output |
4.4mm |
| Single-Ended Headphone Output |
6.35mm |
| Analogue Outputs |
RCA / XLR |
| Supported Functions |
DAC / Headphone Amplifier / Preamp |
| USB Audio Modes |
UAC 1.0 / UAC 2.0 |
| Gaming Console Compatibility |
Supported via UAC Mode Switching |
| Active Speaker Support |
Yes |
| External Amplifier Support |
Yes |
| Desktop Hi-Fi Integration |
Supported |
| Bass Adjustment |
Supported |
| Treble Adjustment |
Supported |
| Digital Filters |
6 Types |
| Bypass Mode |
Supported |
| Swappable Op-Amps |
2 |
| Integrated Display Control |
Supported |
Fosi Audio develops audio products focused on making high-quality listening systems accessible, practical and easy to integrate into modern Hi-Fi setups. Its product range combines compact engineering, straightforward functionality and contemporary design for music enthusiasts building both desktop and home audio systems.
With products spanning amplification, digital audio and analogue playback, Fosi Audio places emphasis on flexible system building and user-friendly performance. Its range is designed to support listeners seeking compact, versatile and capable components for modern stereo and personal audio systems.
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