
Fosi Audio BT20A MAX Class D Bluetooth Integrated Amplifier
Key Features
- Working method: Class D
- Output power: 300W × 2 @ 4Ω
- Total Harmonic Distortion: ≤ 0.003%
- Dynamic Range ≥ 112 dB
- Frequency response: 20Hz-20KHz
- Input: RCA/BT6
Cash / Online Payment · EMI Available
Specification
Amplifier
Amplifier Class
Class D
Power Chip/IC
TPA Series
Output Impedance
4-8 Ohms
Input Voltage
24V-48V DC
Colour
Silver
Description
Fosi Audio BT20A MAX Class D Bluetooth Integrated Amplifier
The Fosi Audio BT20A MAX Class D Bluetooth Integrated Amplifier is a high-performance compact audio amplifier designed for users who want powerful sound, modern wireless connectivity, and simple plug-and-play usability in one device. Built with advanced Class D amplification technology and Bluetooth integration, it delivers clean, dynamic, and distortion-free audio suitable for home audio systems, desktop setups, and small entertainment environments.
Designed with audiophiles and everyday users in mind, the BT20A MAX combines efficiency, power, and simplicity, making it one of the most versatile integrated amplifiers in its category.
High-Performance Class D Amplification with TPA3255
At the core of the BT20A MAX is the Texas Instruments TPA3255 amplifier chip, known for its high efficiency and excellent sound quality.
Key Technology Features
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Texas Instruments TPA3255 Class D amplifier chip
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High-efficiency digital amplification architecture
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Low distortion signal processing
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Advanced feedback control system
Audio Benefits
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Clean and powerful audio output
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Reduced harmonic distortion
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Improved dynamic response
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High clarity across all frequencies
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Stable performance at high volume
This ensures a professional-level Hi-Fi listening experience in a compact design.
Powerful Stereo Output for Home Audio Systems
The BT20A MAX is designed as a 2.0 channel stereo amplifier, delivering strong and balanced sound for passive speakers.
Power Output Performance
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High-power stereo output capability
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Supports most bookshelf and home speakers
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Stable output under load
Benefits
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Loud and clear sound reproduction
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Balanced left and right channel output
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Suitable for medium-sized rooms
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Enhanced music and movie experience
This makes it ideal for home audio setups and desktop systems.
Built-in Bluetooth Wireless Connectivity
One of the most convenient features of the BT20A MAX is its integrated Bluetooth connectivity, allowing wireless audio streaming from multiple devices.
Bluetooth Features
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Wireless Bluetooth audio input
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Stable connection range
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Low latency transmission
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Compatible with smartphones, tablets, and laptops
Benefits
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No need for wired connections
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Easy music streaming from mobile devices
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Clean and clutter-free setup
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Flexible usage in different environments
This makes it highly convenient for modern users.
Simple and User-Friendly Design
The BT20A MAX is designed for ease of use with a minimalistic control interface.
Design Features
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Intuitive volume and tone control knobs
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Compact desktop-friendly structure
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Plug-and-play functionality
Benefits
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Easy installation process
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No technical expertise required
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Quick device setup
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Smooth daily operation
This ensures a hassle-free user experience.
High-Fidelity Sound Quality
The amplifier is engineered to deliver accurate and natural sound reproduction across all frequencies.
Audio Characteristics
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Clear high-frequency response
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Balanced midrange tones
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Deep and controlled bass output
Audio Benefits
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Natural sound signature
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Improved music detail clarity
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Wide dynamic range
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Immersive listening experience
This makes it suitable for audiophiles and casual listeners alike.
Compact Yet Powerful Design
Despite its high output capability, the BT20A MAX maintains a compact and lightweight form factor.
Design Highlights
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Space-saving structure
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Lightweight chassis
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Durable metal construction
Benefits
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Easy placement on desks or shelves
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Modern and clean aesthetic
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Portable and flexible setup
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Long-lasting durability
This makes it suitable for small to medium-sized spaces.
Wide Compatibility with Passive Speakers
The BT20A MAX supports a wide range of passive speakers, making it highly versatile.
Speaker Compatibility
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Bookshelf speakers
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Home theater speakers
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Desktop audio speakers
Benefits
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Flexible system integration
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Supports various speaker sizes
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Stable impedance handling
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Easy upgrade options
This ensures long-term usability across different setups.
Efficient Thermal and Power Management
The amplifier is built with efficient Class D technology, ensuring low heat generation and stable performance.
Efficiency Features
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High-efficiency power conversion
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Low heat output design
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Stable long-term operation
Benefits
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Safe continuous usage
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Reduced energy consumption
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Reliable performance under load
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Longer device lifespan
This makes it suitable for extended listening sessions.
Clean and Balanced Audio Output
The BT20A MAX is tuned to deliver balanced and distortion-free sound.
Audio Performance
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Low distortion output
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High signal-to-noise ratio
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Accurate sound reproduction
Benefits
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Clear and natural sound
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Reduced background noise
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Enhanced listening comfort
-
Professional-grade audio quality
This ensures a premium audio experience.
Ideal Applications of Fosi Audio BT20A MAX
The BT20A MAX is designed for multiple audio environments and use cases.
Home Audio Systems
Perfect for everyday music listening and entertainment.
Desktop Audio Setup
Ideal for PC-based Hi-Fi speaker systems.
Small Entertainment Spaces
Suitable for bedrooms, offices, and small living rooms.
Streaming and Wireless Audio
Supports mobile-based wireless music playback.
Why Choose Fosi Audio BT20A MAX
The BT20A MAX stands out as a powerful yet simple Hi-Fi amplifier designed for modern users.
Key Features Summary
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TPA3255 high-performance amplifier chip
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Bluetooth wireless connectivity
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High-power stereo output
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Compact and minimal design
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Low distortion audio performance
-
Easy plug-and-play setup
-
Wide speaker compatibility
-
Efficient Class D technology
-
High-fidelity sound quality
This makes it an excellent choice for users seeking performance and simplicity.
Audio Phonic Quality Assurance
Audio Phonic ensures that every product delivers reliable performance, durability, and high-quality sound reproduction. The Fosi Audio BT20A MAX reflects this commitment by combining modern amplification technology with user-friendly design.
Technical Specifications of Fosi Audio BT20A MAX
General Information
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Brand: Fosi Audio (Audio Phonic distribution context)
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Product Name: Fosi Audio BT20A MAX Class D Bluetooth Integrated Amplifier
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Category: Integrated Stereo Amplifier
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Channel: 2.0
Amplifier System
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Texas Instruments TPA3255 Class D chip
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High-efficiency digital amplification
Connectivity
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Bluetooth wireless input
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Wired audio input support (varies by configuration)
Audio Performance
-
Low distortion output
-
High signal clarity
-
Balanced stereo sound
Design
-
Compact metal chassis
-
Minimal control interface
-
Desktop-friendly form factor
Frequently Asked Questions (FAQs)
What is Fosi Audio BT20A MAX used for?
It is used for powering passive speakers in home audio, desktop setups, and entertainment systems.
Does it support Bluetooth?
Yes, it supports wireless Bluetooth audio streaming.
What speakers are compatible?
It supports most passive bookshelf and home speakers.
Is it good for beginners?
Yes, it is very easy to install and operate.
Does it deliver high power output?
Yes, it uses the TPA3255 chip for high-efficiency power delivery.
Is it suitable for home theater?
Yes, it can be used as part of a stereo home theater setup.
Does it produce heat?
It has low heat output due to Class D efficiency.
Can I use it with a PC?
Yes, it is ideal for desktop audio systems and PC setups



















