Fosi Audio ZH3 Headphone Amp DAC Preamp

Fosi Audio ZH3 Headphone Amp DAC Preamp with Balanced Outputs

The ZH3 is a high-performance Headphone Amp DAC Preamp from Fosi Audio's premium HiFi series. It features a flagship-grade chipset paired with Fosi’s independently developed dual power supply, push-pull differential complementary fully balanced amplification architecture. Designed for users who demand exceptional sound quality, the ZH3 offers comprehensive input and output options, along with remote control functionality-making it an ideal match for both desktop HiFi setups and home audio systems. Whether you're an audiophile or a passionate music lover, the ZH3 promises a remarkable high-fidelity listening experience.

The Fosi Audio ZH3 is a balanced All-In-One Headphone Amp/ DAC/Preamp featuring an AKM 4493SEQ DAC, XMOS XU316 processor, and fully balanced drive for superior sound quality. It handles high-resolution audio up to DSD512, offers versatile inputs (USB, Optical, Coaxial, RCA) and outputs (4.4mm balanced, 6.35mm unbalanced, XLR, RCA), includes 12V triggers, and provides sound customization through gain switches and digital filters. 

All-in-One Desktop Hi-Fi

DAC / Headphone Amp / Preamp: Provides versatile interfaces for headphones and active speakers. Easily switch outputs and control your desktop Hi-Fi.

Flagship Chipset: XMOS + AKM flagship decoding with 4 high-performance dual op-amps deliver clarity, precision, and transparency.

Fully Balanced Headphone Amplifier Circuit: Exclusively tuned by Fosi’s acoustic team, with 1.9μV noise floor and 117dB crosstalk for clearer separation of vocals and instruments. Easily replaceable op-amps, meeting your pursuit of a personalized audio experience.

Insane Level of Power: Delivering up to 2,570mW per channel into 32 Ohms, crazy overkill for mainstream headphones.

Three-Level Gain Adjustment: Compatible with 16–300Ω headphones, delivers strong control to handle both IEMs and over-ear headphones with ease.

Comprehensive Connectivity

ZH3 has RCA inputs, allowing easy direct connection to analogue sources such as turntables.  Equipped with 4.4mm Balanced and 6.35mm headphone jacks plus XLR Balanced and RCA outputs, offering seamless control for headphones and active speakers.

Minimalist Design

Multi-Function Orange Knob: Double-press to quickly select output mode, seamlessly switching between headphones and speakers.

Aluminium Alloy Construction: Delicate metallic texture with refined series design, not overbearing, and enhanced electromagnetic interference resistance.

1.5-Inch LCD Display: Responsive LCD with all panel controls integrated for clear information and a minimalist look.

Versatile Sound Tuning Options

Selectable Filters

• Sharp Roll Off: Powerful, Dynamic
• Slow Roll Off: Neutral, Balanced
• Short Delay Sharp Roll Off: Detailed, Extended Highs
• Short Delay Slow Roll Off: Clear, Well Defined
• Super Slow Roll Off: Natural, Very Smooth
• Low Dispersion: Precise, Analytical

Bass and Treble Control: Achieve personalized tuning without destroying sound quality, covering a wide enough range without sounding off.

Bypass: Enjoy a very clean, noise-free listening experience by bypassing the tone control circuit.

A Thoughtful Companion for Desktop Hi-Fi

Multi-Function IR Remote: Supports one-touch switching of input and output modes to easily select audio sources and playback devices.

12V Trigger In/Out: Enables synchronized on/off with audio setups, such as the ZD3/ZA3, automating seamless system control.

Auto Power Off: Easily set auto power off after 30 minutes of no signal via remote control, for energy savings and peace of mind.

Volume Memory: Automatically remembers the volume for headphones and preamp outputs. When switching outputs, it adjusts to previous level for safe transitions between headphones and speakers.

Our Review

The Fosi Audio ZH3 is one of those rare all-in-one headphone amp/DAC/preamp units that manages to balance cutting-edge tech with a genuinely enjoyable user experience. Packed with a flagship AKM DAC, XMOS processor, and a fully balanced amplification circuit, it delivers sound that’s clean, powerful, and effortlessly detailed - whether you’re driving sensitive IEMs or full-sized over-ear headphones. With its generous connectivity, from USB and optical to balanced and unbalanced outputs, it slips neatly into any desktop Hi-Fi setup, while thoughtful touches like gain control, digital filters, and tone adjustments let you shape the sound to your taste. Add in the minimalist design, responsive LCD, and handy remote, and the ZH3 doesn’t just perform - it makes day-to-day listening feel smooth, flexible, and just that bit more special.