Fosi Audio V3 Class D 2.0 Power Amplifier

Fosi Audio V3 Class D 2.0 Power Amplifier

The Fosi Audio V3 Class D 2.0 Power Amplifier is a compact yet powerful stereo amplifier designed for audiophiles who want high-quality Hi-Fi sound, strong output power, and ultra-low distortion in a minimalist form factor. Built around the advanced Texas Instruments TPA3255 Class D amplifier chip, the V3 delivers exceptional clarity, efficiency, and dynamic performance suitable for home audio systems, desktop setups, and bookshelf speakers.

With its simple RCA input, powerful output stage, and clean signal reproduction, the Fosi Audio V3 is designed for users who want professional-grade sound without complicated setup.

Advanced TPA3255 Amplifier Technology

At the core of the Fosi Audio V3 is the highly efficient TPA3255 Class D amplifier chip from Texas Instruments, known for delivering powerful output with extremely low distortion.

Key Technology Features

• PurePath Ultra-HD architecture

• High-speed switching Class D design

• Advanced feedback control system

• Ultra-low distortion signal processing

• High-efficiency power conversion

Audio Benefits

• Clean and precise sound reproduction

• Strong dynamic response

• Accurate instrument separation

• Stable performance at high volume

• High-resolution audio clarity

This ensures a true Hi-Fi listening experience in a compact device.

Powerful 300W × 2 Output Performance

The Fosi Audio V3 delivers impressive power output, capable of driving a wide range of passive speakers.

Output Specifications

• 300W × 2 at 4Ω

• Compatible impedance: 2–8Ω

Benefits

• Powerful stereo sound output

• Strong bass performance

• Suitable for large bookshelf speakers

• Stable high-volume operation

• Clean sound even under load

This makes it ideal for home audio systems and entertainment setups.

Ultra-Low Distortion High-Fidelity Sound

The V3 is designed for extremely clean audio reproduction with minimal distortion.

Audio Performance Metrics

• THD: 0.003%

• SINAD: 88dB

• SNR: ≥110dB

Benefits

• Crystal-clear audio output

• Minimal background noise

• Accurate sound reproduction

• Natural and balanced tone

• Professional Hi-Fi quality

This ensures an immersive and distortion-free listening experience.

Wide Frequency Response for Full-Range Audio

The amplifier supports a full audio spectrum for accurate sound reproduction.

Frequency Specification

• 20Hz – 20kHz (±0.1dB)

Benefits

• Deep bass response

• Clear vocal reproduction

• Smooth high-frequency output

• Balanced tonal performance

• Natural music presentation

This ensures full-range Hi-Fi sound quality.

Simple RCA Input for Easy Connectivity

The Fosi Audio V3 uses a straightforward RCA input system for universal compatibility.

Input Features

• RCA analog input

• Easy plug-and-play setup

Benefits

• Compatible with most audio sources

• Simple installation process

• Stable signal transmission

• Low-noise audio input

This makes it easy to integrate into any audio system.

Flexible Output Options

The amplifier includes multiple output options for different setups.

Output Features

• Speaker output terminals

• 3.5mm pre-out support

Benefits

• Easy connection to passive speakers

• System expansion capability

• Subwoofer or external amp integration

• Flexible audio configuration

This enhances usability for advanced audio systems.

Wide Speaker Compatibility

The V3 supports a wide range of speaker impedance levels.

Compatibility Range

• 2Ω to 8Ω speakers

Benefits

• Works with most passive speakers

• Suitable for bookshelf speakers

• Flexible system design

• Stable performance across loads

This ensures universal compatibility.

Compact and Minimalist Design

The amplifier is designed with a small footprint and modern appearance.

Physical Specifications

• Size: 6.5 × 4.1 × 1.4 inches

• Compact desktop form factor

Benefits

• Space-saving design

• Easy desktop placement

• Lightweight and portable

• Clean modern aesthetic

This makes it perfect for home and office setups.

High Efficiency Class D Operation

The Fosi Audio V3 uses efficient Class D technology for optimal performance.

Efficiency Features

• High power efficiency design

• Low heat generation

• Stable operation under load

Benefits

• Energy-efficient performance

• Reduced overheating risk

• Long-term reliability

• Quiet operation

This ensures stable and efficient audio output.

Precision Volume Control System

The amplifier includes a high-quality logarithmic volume control knob.

Control Features

• Built-in A-type logarithmic potentiometer

• Smooth volume adjustment

Benefits

• Precise audio control

• Natural volume scaling

• Easy user operation

• Better listening experience

This improves usability and sound control.

Stable Power Supply System

The Fosi Audio V3 supports wide DC input for flexible power options.

Power Specifications

• DC Input Range: 24V – 48V

• Recommended Power Supply: 32V / 5A or 48V / 5A

Benefits

• Stable power delivery

• Flexible setup options

• High-power output support

• Reliable performance

This ensures consistent audio quality.

Clean Signal Processing for Hi-Fi Sound

The amplifier is designed for clean and accurate signal transmission.

Audio Benefits

• Low distortion output

• High signal clarity

• Balanced frequency response

• Accurate stereo imaging

This ensures high-fidelity sound reproduction.

Ideal Applications of Fosi Audio V3

The amplifier is suitable for a wide range of audio environments.

Home Audio Systems

Perfect for everyday music listening.

Desktop Hi-Fi Setup

Ideal for PC-based audio systems.

Bookshelf Speaker Systems

Drives passive speakers efficiently.

Home Theater Setup

Enhances TV and movie audio experience.

Why Choose Fosi Audio V3

The Fosi Audio V3 stands out as a compact yet powerful Hi-Fi amplifier designed for modern users.

Key Features Summary

• TPA3255 high-performance amplifier chip

• 300W × 2 powerful output

• Ultra-low distortion (0.003% THD)

• High signal-to-noise ratio (≥110dB)

• Wide frequency response (20Hz–20kHz)

• RCA input for easy connectivity

• 3.5mm pre-out support

• Wide speaker compatibility (2–8Ω)

• Compact minimalist design

• Efficient Class D operation

This makes it an excellent choice for high-quality audio systems.

Audio Phonic Quality Assurance

Audio Phonic ensures every audio product meets strict standards of performance, clarity, and durability. The Fosi Audio V3 reflects this commitment by delivering powerful, clean, and efficient Hi-Fi sound in a compact design.

Technical Specifications of Fosi Audio V3

General Information

• Brand: Fosi Audio (Audio Phonic distribution context)

• Product Name: Fosi Audio V3 Class D 2.0 Power Amplifier

• Category: Power Amplifier

• Channel: 2.0 Stereo System

Power Output

• 300W × 2 at 4Ω

• Impedance Range: 2–8Ω

Audio Performance

• THD: 0.003%

• SINAD: 88dB

• SNR: ≥110dB

• Frequency Response: 20Hz – 20kHz (±0.1dB)

Connectivity

• RCA input

• Speaker output terminals

• 3.5mm pre-out

Physical Design

• Size: 6.5 × 4.1 × 1.4 inches

• Compact desktop form factor

Power Requirements

• DC 24V – 48V input

• Recommended: 32V/5A or 48V/5A

Frequently Asked Questions (FAQs)

What is Fosi Audio V3 used for?

It is used for powering passive speakers in home and desktop Hi-Fi audio systems.

Does it support Bluetooth?

No, it only supports RCA analog input.

How powerful is the V3?

It delivers 300W × 2 output at 4Ω.

Can it drive large speakers?

Yes, it is suitable for bookshelf and medium-sized passive speakers.

Is it good for home theater?

Yes, it enhances TV and movie audio systems effectively.

Does it include a power supply?

It requires an external DC power supply (recommended 32V or 48V).

What makes its sound quality special?

It uses the TPA3255 chip with ultra-low distortion and high SNR for Hi-Fi sound.

Is it suitable for beginners?

Yes, it is easy to install and use with RCA plug-and-play setup.