Fosi Audio V3 Mono Class D Power Amplifier

Fosi Audio V3 Mono Class D Power Amplifier

The Fosi Audio V3 Mono Class D Power Amplifier is a next-generation monoblock power amplifier designed for audiophiles who demand extreme clarity, precision, and control in their audio systems. Built with advanced Class D architecture and PFFB (Post-Filter Feedback) technology, it delivers exceptionally low distortion, improved linearity, and highly accurate sound reproduction.

Engineered as a compact yet powerful single-channel amplifier, the V3 Mono is ideal for high-end stereo setups (using two units), subwoofer amplification, or professional audio systems where precision and power are equally important.

Advanced PFFB Post-Filter Feedback Technology

One of the most important innovations in the Fosi Audio V3 Mono is its PFFB (Post-Filter Feedback) technology. This system significantly improves audio performance by correcting distortion after the output filter stage.

Key Technology Benefits

• Post-filter feedback correction system

• Reduced harmonic distortion

• Improved frequency response linearity

• Enhanced signal accuracy

• Better overall system efficiency

Audio Advantages

• Cleaner and more transparent sound

• More natural tonal balance

• Improved stereo imaging (with dual units)

• Reduced harshness at high volume

• More accurate instrument separation

This technology brings the V3 Mono closer to reference-grade Hi-Fi performance.

Monoblock Design for High-Precision Audio

The V3 Mono is designed as a dedicated single-channel amplifier, allowing users to build high-performance stereo systems using two separate units.

Benefits of Monoblock Architecture

• Dedicated power per channel

• Reduced crosstalk between channels

• Improved stereo separation

• Higher dynamic performance

• Better signal purity

This architecture is widely preferred in high-end audiophile setups.

Ultra-High Signal Quality Performance

The V3 Mono is engineered for extremely clean audio output with outstanding signal integrity.

Audio Performance Metrics

• SINAD: XLR – 101dB / RCA – 93dB

• SNR: ≥123dB

Benefits

• Extremely low noise floor

• High-resolution audio reproduction

• Crystal-clear sound detail

• Accurate dynamic response

• Professional-grade audio clarity

This ensures a pure and immersive listening experience.

Powerful Output Performance

The Fosi Audio V3 Mono delivers strong and stable output power suitable for demanding audio setups.

Power Output Specifications

• 240W @ 4Ω (48V / 5A power supply)

• 100W @ 4Ω (32V / 5A power supply)

Benefits

• High power delivery for demanding speakers

• Stable performance at high volume

• Suitable for subwoofer or main speaker use

• Efficient energy usage

• Clean output without distortion

This makes it suitable for both home and semi-professional systems.

Flexible Input Connectivity Options

The V3 Mono supports multiple input formats, making it compatible with a wide range of audio systems.

Input Options

• RCA input

• XLR balanced input

• ¼” TRS input

Benefits

• Compatible with professional audio gear

• Reduced noise with balanced connections

• Flexible system integration

• Easy switching between audio sources

This ensures maximum versatility for different audio setups.

High-Quality Speaker Output System

The amplifier supports flexible speaker connection options for convenience and performance.

Output Features

• Banana plug support

• Bare wire connection support

• Stable speaker output terminals

Benefits

• Easy installation

• Secure signal transmission

• Compatible with most Hi-Fi speakers

• Reliable long-term connection

This ensures stable audio delivery to speakers.

High SNR for Clean Audio Output

The V3 Mono features an exceptionally high signal-to-noise ratio, ensuring minimal interference and maximum clarity.

Audio Benefits

• SNR ≥123dB

• Clean background with no hiss

• Accurate sound reproduction

• Enhanced listening detail

This ensures studio-quality audio performance.

Engineered for Audiophile Listening

The V3 Mono is designed based on real user feedback and audiophile requirements.

Design Philosophy

• Developed from global user feedback

• Focus on sound purity and accuracy

• Optimized for home Hi-Fi systems

Benefits

• Real-world tuned audio performance

• Balanced sound signature

• Enhanced musical realism

• Refined listening experience

This makes it a true audiophile-grade amplifier.

Ideal Stereo System Configuration

For full stereo performance, two V3 Mono units can be used together.

Stereo Setup Benefits

• Independent left and right channels

• Improved sound separation

• Wider soundstage

• Higher audio precision

This creates a true high-end stereo Hi-Fi system.

Compact and Modern Design

Despite its powerful performance, the V3 Mono maintains a compact and minimal design.

Design Features

• Small monoblock chassis

• Efficient heat dissipation

• Durable metal construction

Benefits

• Easy placement in any setup

• Space-saving design

• Professional aesthetic

• Long-lasting durability

This makes it suitable for modern home audio environments.

Efficient Class D Technology

The amplifier uses advanced Class D technology for high efficiency and low heat generation.

Efficiency Features

• High power conversion efficiency

• Reduced energy loss

• Low heat output

Benefits

• Stable long-term performance

• Energy-efficient operation

• Reliable high-power output

• Quiet and cool operation

This ensures long-lasting performance stability.

Clean Frequency Response

The V3 Mono delivers a balanced and accurate frequency response for all types of audio.

Audio Range

• Wide full-range frequency response

Benefits

• Accurate bass reproduction

• Clear midrange clarity

• Smooth high-frequency output

• Natural sound signature

This ensures full-spectrum Hi-Fi sound quality.

Ideal Applications of Fosi Audio V3 Mono

The amplifier is suitable for a variety of audio applications.

High-End Stereo Systems

Used in pairs for audiophile-grade stereo setups.

Subwoofer Amplification

Provides powerful low-frequency output.

Home Theater Systems

Enhances cinematic audio experience.

Professional Audio Systems

Suitable for studio monitoring and sound systems.

Why Choose Fosi Audio V3 Mono

The V3 Mono stands out as a premium monoblock amplifier designed for precision, clarity, and flexibility.

Key Features Summary

• PFFB Post-Filter Feedback Technology

• Monoblock single-channel design

• Ultra-high SNR (≥123dB)

• Low distortion and high linearity

• Flexible RCA, XLR, TRS inputs

• Powerful 240W output (48V supply)

• Compact audiophile-grade design

• High-efficiency Class D architecture

• Designed based on audiophile feedback

This makes it one of the most advanced compact monoblock amplifiers in its category.

Audio Phonic Quality Assurance

Audio Phonic ensures every product meets strict standards of sound accuracy, durability, and performance. The Fosi Audio V3 Mono reflects this commitment by delivering reference-level audio quality in a compact and efficient design.

Technical Specifications of Fosi Audio V3 Mono

General Information

• Brand: Fosi Audio (Audio Phonic distribution context)

• Product Name: Fosi Audio V3 Mono Class D Power Amplifier

• Category: Monoblock Power Amplifier

• Channel: 1 (Mono)

Power Output

• 240W @ 4Ω (48V / 5A)

• 100W @ 4Ω (32V / 5A)

Audio Performance

• SINAD: RCA 93dB / XLR 101dB

• SNR: ≥123dB

• Low distortion Class D output

Connectivity

• RCA input

• XLR input

• ¼” TRS input

• Speaker output (banana/bare wire)

Power Requirements

• DC 24V – 48V input

Design

• Compact monoblock chassis

• Metal housing

• Efficient thermal design

Frequently Asked Questions (FAQs)

What is Fosi Audio V3 Mono used for?

It is used as a high-performance monoblock amplifier for Hi-Fi audio systems, subwoofers, and stereo setups.

Can I use two units for stereo?

Yes, two V3 Mono units can be used for full stereo left and right channels.

What is PFFB technology?

It is a post-filter feedback system that reduces distortion and improves sound clarity and accuracy.

Does it support balanced input?

Yes, it supports XLR and TRS balanced inputs.

How powerful is it?

It delivers up to 240W at 4Ω with a 48V power supply.

Is it suitable for audiophile setups?

Yes, it is specifically designed for high-end Hi-Fi audio systems.

What speakers are compatible?

It supports most passive speakers depending on impedance and power requirements.

Does it produce heat?

It is highly efficient Class D design with low heat output.