Fosi Audio MC351 Class D 2.1 Integrated Amplifier

Fosi Audio MC351 Class D 2.1 Integrated Amplifier

The Fosi Audio MC351 Class D 2.1 Integrated Amplifier is a premium all-in-one Hi-Fi audio solution designed for users who want powerful amplification, modern digital decoding, and vintage-inspired aesthetics in a single compact device. Built with dual Texas Instruments TPA3255 amplifier chips and an integrated DAC system, the MC351 delivers rich, dynamic, and highly detailed sound performance suitable for home audio systems, desktop setups, and entertainment environments.

With its 2.1 channel architecture, multiple input options, and independent subwoofer control, the MC351 is engineered to provide both high-fidelity stereo sound and deep bass performance in one unified system.

Dual TPA3255 High-Performance Amplifier Architecture

At the core of the Fosi Audio MC351 are two Texas Instruments TPA3255 Class D amplifier chips. This dual-chip design ensures high power output with extremely low distortion and excellent efficiency.

Key Technology Features

• Dual TPA3255 Class D amplifier chips

• PurePath Ultra-HD audio architecture

• Advanced feedback control system

• High-speed switching design

• Efficient thermal management system

Audio Benefits

• Clean and powerful stereo output

• Precise instrument separation

• Strong dynamic response

• Stable high-volume performance

• Ultra-low distortion audio reproduction

This ensures professional-grade Hi-Fi sound quality for all listening environments.

Powerful 2.1 Channel Output System

The MC351 is designed as a full 2.1-channel audio system, combining stereo speakers with a dedicated subwoofer output for enhanced bass performance.

Output Specifications

• Stereo output: 165W × 2 @ 4Ω

• Subwoofer output: 350W @ 4Ω

• Total system configuration: 2.1 channel

Benefits

• Deep and powerful bass performance

• Clear stereo separation

• Balanced full-range sound

• Enhanced movie and music experience

• Stable high-power output

This makes it ideal for home theater and Hi-Fi music systems.

Built-in DAC for Digital Audio Processing

One of the standout features of the MC351 is its integrated digital-to-analog converter (DAC), which allows direct digital audio decoding.

Input Support

• Bluetooth input

• RCA analog input

• Optical (OPT) input

• USB input

• Coaxial (COA) input

Benefits

• Direct digital audio decoding

• Reduced signal loss

• High-resolution sound output

• Flexible device compatibility

• Easy plug-and-play usage

This eliminates the need for external DAC devices.

High-Fidelity Audio Performance

The MC351 is engineered to deliver clean, accurate, and immersive audio performance.

Audio Performance Metrics

• THD: ≤0.03%

• SNR: ≥100dB

• Max Output Power: 165W × 2 + 350W @ 4Ω

Benefits

• Crystal-clear sound reproduction

• Minimal background noise

• High dynamic range audio

• Natural tonal balance

• Professional Hi-Fi clarity

This ensures a premium listening experience across all audio types.

Vintage-Style VU Meter Display

A unique feature of the MC351 is its circular VU meter, which adds a retro aesthetic while also providing real-time audio visualization.

Design Features

• Analog-style moving needle display

• Real-time audio level indication

• Classic Hi-Fi visual design

Benefits

• Vintage aesthetic appeal

• Visual feedback of audio levels

• Enhanced listening experience

• Stylish desktop presence

This combines modern performance with classic design inspiration.

Multi-Input Connectivity for Maximum Flexibility

The MC351 supports a wide range of input options, making it compatible with almost any audio source.

Input Options

• Bluetooth wireless input

• RCA analog input

• Optical input (OPT)

• USB input

• Coaxial input (COA)

Benefits

• Compatible with TVs, PCs, phones, and CD players

• Easy switching between sources

• Stable signal transmission

• Flexible system integration

This makes it a complete all-in-one audio hub.

Multiple Output Options for System Expansion

The MC351 offers flexible output options for speakers and subwoofers.

Output Features

• Passive speaker output

• Dedicated subwoofer output

• Pre-out support

Benefits

• Easy system expansion

• Subwoofer integration

• External amplifier connection

• Flexible audio setup

This ensures full control over audio system configuration.

Wide Speaker Compatibility

The amplifier supports a broad range of speaker impedance levels.

Compatibility

• 2Ω to 8Ω passive speakers

Benefits

• Works with bookshelf speakers

• Supports home theater speakers

• Flexible setup options

• Stable performance under load

This ensures compatibility with most Hi-Fi speaker systems.

High-Efficiency Class D Technology

The MC351 uses advanced Class D amplification technology for efficient and stable performance.

Efficiency Features

• High power efficiency design

• Reduced heat generation

• Optimized energy consumption

Benefits

• Stable long-term performance

• Low power loss

• Cooler operation

• Reliable high-output performance

This makes it suitable for continuous usage.

Clean and Balanced Sound Output

The MC351 is tuned for balanced audio reproduction across all frequency ranges.

Audio Characteristics

• Clear highs

• Full midrange

• Strong bass response

Benefits

• Natural sound reproduction

• Balanced tonal performance

• Accurate instrument separation

• Immersive listening experience

This ensures a realistic audio experience.

Compact Yet Premium Build Design

The MC351 is designed with a compact form factor while maintaining a premium build quality.

Design Features

• Durable metal chassis

• Compact desktop-friendly size

• High-quality construction

Benefits

• Space-saving design

• Modern aesthetic appearance

• Long-lasting durability

• Stable heat management

This makes it ideal for home and studio use.

Ideal Applications of Fosi Audio MC351

The MC351 is suitable for a wide range of audio environments.

Home Theater Systems

Delivers immersive cinematic sound with deep bass.

Music Listening Setup

Provides rich Hi-Fi stereo audio performance.

Desktop Audio System

Perfect for PC-based audio setups.

Entertainment Systems

Enhances TV and multimedia sound quality.

Why Choose Fosi Audio MC351

The MC351 stands out as a complete Hi-Fi solution combining power, clarity, and visual appeal.

Key Features Summary

• Dual TPA3255 amplifier chips

• Built-in DAC with multiple inputs

• 2.1 channel system with subwoofer output

• Vintage-style VU meter display

• Ultra-low distortion (≤0.03%)

• High SNR (≥100dB)

• Multiple input options (BT, RCA, USB, OPT, COA)

• Flexible output system

• Compact premium design

• High-efficiency Class D performance

This makes it one of the most versatile integrated amplifiers in its category.

Audio Phonic Quality Assurance

Audio Phonic ensures every product meets strict standards of performance, reliability, and sound quality. The Fosi Audio MC351 reflects this commitment by combining modern digital processing, powerful amplification, and classic analog aesthetics into one complete Hi-Fi system.

Technical Specifications of Fosi Audio MC351

General Information

• Brand: Fosi Audio (Audio Phonic distribution context)

• Product Name: Fosi Audio MC351 Class D 2.1 Integrated Amplifier

• Category: Integrated DAC Amplifier

• Channel: 2.1 System

Power Output

• 165W × 2 (Stereo @ 4Ω)

• 350W (Subwoofer @ 4Ω)

Audio Performance

• THD: ≤0.03%

• SNR: ≥100dB

• Max Output Power: 165W × 2 + 350W @ 4Ω

Connectivity

• Bluetooth input

• RCA input

• Optical input

• USB input

• Coaxial input

Output Options

• Passive speaker output

• Subwoofer output

• Pre-out

Design Features

• Circular VU meter display

• Metal chassis build

• Compact desktop form factor

Frequently Asked Questions (FAQs)

What is Fosi Audio MC351 used for?

It is used as a 2.1-channel Hi-Fi amplifier for home audio, music listening, and entertainment systems.

Does it include a DAC?

Yes, it has a built-in DAC supporting USB, optical, and coaxial inputs.

Can it connect to a subwoofer?

Yes, it has a dedicated subwoofer output.

Does it support Bluetooth?

Yes, it supports wireless Bluetooth audio input.

What speakers can it support?

It supports 2Ω to 8Ω passive speakers.

Is it good for home theater?

Yes, it provides powerful 2.1 surround-style audio.

What makes its design special?

It features a vintage-style VU meter with modern Hi-Fi performance.

Is it suitable for beginners?

Yes, it is easy to set up and use with multiple plug-and-play inputs.