Fosi Audio ZA3 

The Next Generation Balanced Dual-Mode Class-D Amplifier 

Buy Now

Fosi Audio ZA3 

The Next Generation Balanced Dual-Mode Class-D Amplifier 

Pre-order Now
OVERVIEW
FEATURES
SPECS

Amplifying Your Voice, Shaping Our Innovation 

At Fosi Audio, behind every innovation, there's a story. The birth of the ZA3 amplifier is just such a story, centered around our users.

After the launch of the V3 amplifier, we gathered innumerable feedback from passionate audiophiles. They expressed a desire for us to develop an even better amplifier based on V3.

If they made one that was a balanced mono block wow, that would be god like. 

-zenmorris182

A true audiophile will never look at TRS or even RCA connectors, as only balanced connection (exp. XLR) preserves the signal.

-grogi.giant

The next version should have the option to switch it to a mono block. What a win that would be! 

-b.k.7364

We listened, we reflected, and we took action.     

After countless design sketches, numerous prototype developments, and a comprehensive regime of rigorous testing, the blueprint of the ZA3 amplifier gradually took form. Every adjustment and detail refinement was a thoughtful response to our customers' input. We didn't just listen to their needs; we immersed ourselves in their passion for quality sound. Our goal was to not only meet but exceed their expectations, crafting an amplifier that embodies their pursuit of auditory excellence and aligns with our dedication to superior sound.

ZA3 is more than just a product; it's the crystallization of joint efforts between Fosi Audio and our users. We proudly say that every customer is a co-designer behind this amplifier. From the balanced XLR input to the support for mono mode, every feature of ZA3 is crafted to meet audiophiles' most authentic audio experience.  

At Fosi Audio, we believe that true innovation stems from listening to the heart, fueled by shared passion and pursuit. ZA3 is our commitment to excellence, and a shared audio legend that we write together with you. 

Share Your ZA3 Experience, Win ZA3!

Why Fosi Audio ZA3?

Title
XLR Input
Large Power Output
TPA3255 Amp Chip
Optimized Circuit Board Layout
Replaceable Op-Amps
Upgraded Heat Dissipation
Japanese NCC Capacitors
Japanese ELNA Capacitors
German WIMA Capacitors
Japanese Sumida Inductors
Taper A Pot
12V Trigger in

Fosi Audio ZA3 

The first limited batch of 2000 pre-order units has been sold out 

 we sincerely appreciate your support for making this moment so special

 

Starting from January 28, 2024, we will ship in sequence based on the pre-order time. Due to the large number of orders, the shipping preparation time may take 1-2 days.

Title

Amplifying Your Voice, Shaping Our Innovation 

At Fosi Audio, behind every innovation, there's a story. The birth of the ZA3 amplifier is just such a story, centered around our users.After the launch of the V3 amplifier, we gathered innumerable feedback from passionate audiophiles. They expressed a desire for us to develop an even better amplifier based on V3.

If they made one that was a balanced mono block wow, that would be god like. 

-zenmorris182

A true audiophile will never look at TRS or even RCA connectors, as only balanced connection (exp. XLR) preserves the signal.

-grogi.giant

The next version should have the option to switch it to a mono block. What a win that would be!

 -b.k.7364

We listened, we reflected, and we took action.   

After countless design sketches, numerous prototype developments, and a comprehensive regime of rigorous testing, the blueprint of the ZA3 amplifier gradually took form. Every adjustment and detail refinement was a thoughtful response to our customers' input. We didn't just listen to their needs; we immersed ourselves in their passion for quality sound. Our goal was to not only meet but exceed their expectations, crafting an amplifier that embodies their pursuit of auditory excellence and aligns with our dedication to superior sound.

ZA3 is more than just a product; it's the crystallization of joint efforts between Fosi Audio and our users. We proudly say that every customer is a co-designer behind this amplifier. From the balanced XLR input to the support for mono mode, every feature of ZA3 is crafted to meet audiophiles' most authentic audio experience.  Because at Fosi Audio, we believe that true innovation stems from listening to the heart, fueled by shared passion and pursuit. ZA3 is not just an amplifier; it's our commitment to excellence, and a shared audio legend that we write together with you. 

XLR Input
Large Power Output
TPA3255 Amp Chip
Optimized Circuit Board Layout
Replaceable Op-Amps
Upgraded Heat Dissipation
Japanese NCC Capacitors
Japanese ELNA Capacitors
German WIMA Capacitors
Japanese Sumida Inductors
Taper A Pot
12V Trigger in

Debut Balanced Stereo/Mono Amplifier 

Effortlessly Switch Between Modes to Craft Your Ideal HiFi System with Premium Sound Quality

XLR Balanced Input 

Pure Sound, Hi-Def Auditory Adventure

Easy 2.1-Ch Upgrade

Subwoofer Output for Superior Experience

PBTL Mono Mode Support 

More Power Output to Elevate Your Stereo HiFi System to New Heights

TI TPA3255 Amp Chip Integrated​

Enabling Superior Audio Quality and Ultra-Low Distortion Across the Audio Band with Class-D Efficiency

Japanese NCC Capacitors

Japanese ELNA Capacitors 

German WIMA Capacitors 

Japanese Sumida Inductors 

Advanced Heat Dissipation Design 

Enhanced Cooling with Larger Chassis, Whole-Body Heatsink Design, and Side Ventilation with Dust Covers

Separated Digital & Analog Modules 

Optimized circuit board layout protects core audio modules from interference for a purer sound experience.

Swappable Op-Amps

It enables you to customize your audio experience with ease, by effortlessly rolling op-amps to suit your unique sound preferences.

Swappable Op-Amp

It enables you to customize your audio experience with ease, by effortlessly rolling op-amps to suit your unique sound preferences.

Taper A Potentiometer

It helps achieve a linear listening experience, by enabling precise volume control to match the human ear's auditory characteristics.

More Functions

Title

12V Trigger Sync Interface

 

Sync with Other Devices for One-Click Power Control

Aluminum Alloy and One-Piece Molded Chassis

Delicate Sandblast, Smooth Edges, Premium Feel

Convenient Mode Switching

 

Choose Between Two Input Modes Easily with a Toggle Switch

12V Trigger Sync Interface

Sync with Other Devices for One-Click Power Control

Aluminum Alloy and One-Piece Molded Chassis

Delicate Sandblast, Smooth Edges, Premium Feel

Convenient Mode Switching

Choose Between Two Input Modes Easily with a Toggle Switch

Hear What They Are Saying

Title

the Honest Audiophile 

Audio Masterclass

cheapaudioman

Erin's Audio Corner

宮甚商店

iiWi-Reviews

Learn More

12V Trigger Sync Interface

Sync with Other Devices for One-Click Power Control

Aluminum Alloy and One-Piece Molded Chassis

Delicate Sandblast, Smooth Edges, Premium Feel

Convenient Mode Switching

Choose Between Two Input Modes Easily with a Toggle Switch

Product Details​

Title

Specifications

Channel: 2.0

Amplifier Chip: Texas Instruments TPA3255

SINAD: 89dB

SNR: ≥106dB

Dynamic Range: ≥106dB

THD: <0.006%

Speaker Impedance Compatibility: 2-8Ω

Rated Power Output:

With 48V/5A PSU

Stereo: 180Wx2 @4Ω

Mono: 235Wx1 @4Ω

With 32V/5A PSU

Stereo: 95Wx2 @4Ω

Mono: 110Wx1 @4Ω

Frequency Response: 20Hz - 20KHz(±0.1dB)

Input Voltage Range: DC 24-48V

Input & Output

Input: RCA, XLR, 1/4" TRS

Output: Speaker Output (supports banana plug or bare wire connection), Active Subwoofer Output

Download

User Manual:                 Download

What's in the box？

Fosi Audio ZA3 Power Amplifier x1 

Power Adapter x1 

User Manual x1