Fosi Audio ZA3 Balanced Dual-Mode Class-D Amplifier

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

Buy 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.

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

Williston Audio Labs

宮甚商店

iiWi-Reviews

If you are looking for something that speaks XLR to pack with you and hook up with professionals or are looking to set up a simple 2.1 system in a small space you can’t go wrong with the Fosi ZA3.

That said, if this Fosi pairing isn’t quite the high-end hack of hi-fi dreams, it doesn’t miss by that much and, for the money, is a stone-cold steal.

The Fosi Audio ZA3 is a capable and flexible class D amplifier. It carries a good amount of inputs and output configurations and its upgradeability is refreshing.

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

Fosi Audio ZA3 The Next Generation Balanced Dual-Mode Class-D Amplifier

Fosi Audio ZA3 The Next Generation Balanced Dual-Mode Class-D Amplifier

Amplifying Your Voice, Shaping Our Innovation

Why Fosi Audio ZA3?

Fosi Audio ZA3 The first limited batch of 2000 pre-order units has been sold out

Amplifying Your Voice, Shaping Our Innovation

Debut Balanced Stereo/Mono Amplifier

XLR Balanced Input

Easy 2.1-Ch Upgrade

PBTL Mono Mode Support

TI TPA3255 Amp Chip Integrated​

Japanese NCC Capacitors

Japanese ELNA Capacitors

German WIMA Capacitors

Japanese Sumida Inductors

Advanced Heat Dissipation Design

Separated Digital & Analog Modules

Swappable Op-Amps

Swappable Op-Amp

Taper A Potentiometer

More Functions

12V Trigger Sync Interface

Aluminum Alloy and One-Piece Molded Chassis

Convenient Mode Switching

12V Trigger Sync Interface

Aluminum Alloy and One-Piece Molded Chassis

Convenient Mode Switching

Hear What They Are Saying

the Honest Audiophile

Audio Masterclass

cheapaudioman

Williston Audio Labs

宮甚商店

iiWi-Reviews

12V Trigger Sync Interface

Aluminum Alloy and One-Piece Molded Chassis

Convenient Mode Switching

Product Details​

Fosi Audio ZA3
The Next Generation Balanced Dual-Mode Class-D Amplifier

Fosi Audio ZA3
The Next Generation Balanced Dual-Mode Class-D Amplifier

Fosi Audio ZA3
The first limited batch of 2000 pre-order units has been sold out

TI TPA3255 Amp Chip Integrated

Product Details