BRZHIFI A20B Class A Tube Amplifier

BRZHIFI A20B Class A Tube Amplifier

The BRZHIFI A20B Class A Tube Amplifier is a high-quality audiophile vacuum tube amplifier designed for music lovers who appreciate warm, natural, and emotionally rich sound reproduction. Built with a pure Class A Single Ended architecture and powered by the legendary 6N3C vacuum tube, this amplifier delivers a deeply musical and immersive listening experience.

Engineered for true Hi-Fi enthusiasts, the BRZHIFI A20B combines classic tube warmth with premium components and modern engineering precision. It is specially designed for bookshelf speakers and compact Hi-Fi systems, offering smooth vocals, detailed highs, and controlled bass response with extremely low background noise.

Whether used in a home listening room, desktop audiophile setup, or dedicated music environment, the A20B provides an elegant balance of musicality, clarity, and natural tone.

Pure Class A Tube Amplification Technology

The BRZHIFI A20B operates using a pure Class A amplifier design, which is widely considered the highest standard in analog audio reproduction. In Class A operation, the amplifier conducts continuously, ensuring a smooth and linear signal without crossover distortion.

This results in a natural and emotionally engaging sound signature that is highly valued in audiophile systems.

Benefits of Class A Amplification

• Extremely smooth and natural sound output
• No crossover distortion
• High level of musical detail
• Rich harmonic structure
• Stable and consistent audio performance
• Deep emotional sound expression

The A20B delivers music with warmth and realism, making every listening session more enjoyable and immersive.

Powerful 6N3C Vacuum Tube Performance

This machine is designed with the power tube 6N3C from the Soviet Union. In a single-ended circuit, the 6N3C outperforms the EL34. It is relatively more affordable and more accessible in terms of price. However, it remains obscure and little-known. It offers clear sound, sweet and mellow tone quality, good clarity, and an elegant and attractive appearance.

 

Electrodes: 6N3C Tube Sound Characteristics

• Strong musical presence
• Rich harmonic overtones
• Delicate high-frequency detail
• Natural and realistic vocals
• Smooth and fatigue-free listening experience
• The 6N3C vacuum tube is legendary for its defined "British sound," characterized by a pronounced, punchy midrange, a tight and articulate low end, and a smooth, singing overdrive. It delivers a harmonically rich, warm tone with an aggressive, raw edge when pushed into saturation.

Benefits of Single Ended Tube Design

• Zero Crossover Distortion
• Harmonic "Bloom"
• Signature 6N3C Tone
• Signal Path Simplicity

A single-ended (SE) 6N3C tube amplifier operates in pure Class A. This design uses a single tube (or tubes wired in parallel) to handle the entire audio waveform, yielding zero crossover distortion, extreme circuit simplicity, and a natural, highly musical harmonic structure

Excellent Compatibility with Bookshelf Speakers

The BRZHIFI A20B is specially designed to work efficiently with bookshelf speakers. Its 10W × 2 output power is optimized for high-sensitivity speaker systems, delivering clear and detailed sound without distortion.

Ideal Speaker Applications

• Bookshelf Hi-Fi speakers
• Compact stereo systems
• Desktop audio setups
• Small listening rooms
• Near-field listening environments

Despite its modest power rating, the amplifier delivers rich and immersive sound due to its Class A tube design.

Extremely Low Noise and Dark Background Sound

One of the key strengths of the BRZHIFI A20B is its exceptionally low noise floor. The amplifier is designed to produce a very dark and quiet background, allowing fine musical details to be clearly heard.

Benefits of Low Noise Design

• Clean and silent background
• Improved micro-detail reproduction
• Better instrument separation
• Enhanced listening clarity
• More immersive audio experience

This makes the amplifier ideal for critical listening environments.

High-End Imported Audio Components

The BRZHIFI A20B is built using a large number of premium imported components to ensure long-term reliability and superior sound quality.

Premium Components Used

• Japanese high-grade filter capacitors
• ALPS high-precision volume potentiometer
• HIFI-grade special transformer
• Russian 6N3C vacuum tubes
• High-quality signal wiring

Benefits of Premium Components

• Improved sound accuracy
• Long-lasting durability
• Stable electrical performance
• Reduced signal distortion
• Enhanced tonal richness

Each component is carefully selected to ensure audiophile-grade performance.

ALPS Volume Control for Smooth Operation

The amplifier includes a high-quality ALPS potentiometer, known for its smooth operation and long lifespan.

ALPS Potentiometer Benefits

• Smooth volume adjustment
• High precision control
• Long-term durability
• Dust-resistant performance
• Improved audio consistency

This ensures a premium user experience during daily operation.

HIFI Special Transformer for Stable Power Delivery

The BRZHIFI A20B uses a high-quality HIFI special transformer designed to provide stable and clean power to the amplifier circuit.

Benefits of HIFI Transformer

• Stable voltage supply
• Reduced electrical noise
• Improved sound clarity
• Better dynamic response
• Enhanced amplifier stability

The transformer plays a crucial role in achieving high-quality audio output.

Natural and Realistic Vocal Reproduction

The A20B is especially known for its excellent vocal reproduction. It delivers natural, clear, and emotionally rich vocals that feel close to live performance.

Vocal Sound Characteristics

• Realistic voice texture
• Smooth midrange response
• Natural tonal balance
• Clear articulation of speech
• Emotional sound delivery

This makes it ideal for vocal music, jazz, acoustic performances, and classical recordings.

Excellent Musical Overtones and Detail

The 6N3C tube provides rich harmonic overtones that enhance musical depth and realism. These harmonics create a more engaging and lifelike listening experience.

Sound Detail Advantages

• Enhanced musical layering
• Improved sound depth
• Rich harmonic texture
• Smooth frequency transition

Listeners can enjoy subtle musical details that are often lost in standard amplifiers.

Pure Class A Power Output Performance

The BRZHIFI A20B delivers 10W × 2 output power in pure Class A mode, optimized for high-quality listening rather than high-volume output.

Output Benefits

• Smooth and distortion-free sound
• Ideal for sensitive speakers
• Strong musical presence
• High-quality audio at moderate volume

This makes it perfect for audiophile listening environments.

Compact and Elegant Design

The amplifier is designed with a compact yet solid chassis that ensures durability and aesthetic appeal.

Physical Specifications

• Dimensions: 172 width x 139 height x 281 depth Packed
• Weight: 8 KG

Design Advantages

• Compact audiophile form factor
• Strong metal construction
• Stable internal layout
• Elegant visual design

This allows easy placement in home audio setups and listening rooms.

Ideal Applications of BRZHIFI A20B

The BRZHIFI A20B is suitable for a wide range of audiophile and home audio applications.

Home Hi-Fi Systems

Perfect for music lovers who want warm and natural tube sound.

Desktop Audiophile Setup

Ideal for personal listening stations with bookshelf speakers.

Small Listening Rooms

Excellent for dedicated music listening environments.

Vocal and Acoustic Music Playback

Highly suitable for genres that require emotional depth and clarity.

Why Choose BRZHIFI A20B Tube Amplifier

The BRZHIFI A20B stands out as a pure Class A tube amplifier that delivers exceptional musicality and emotional sound performance. It combines premium components, classic tube technology, and modern engineering design.

Key Features Summary

• Pure Class A tube amplifier design
• 6N3C Single Ended output system
• 6N2 driver tube per channel
• Ultra-low noise performance
• Premium imported components
• ALPS volume control
• HIFI special transformer
• Natural vocal reproduction
• Rich harmonic sound signature
• Optimized for bookshelf speakers

This combination makes it a perfect choice for serious audiophiles who value natural sound reproduction.

Audio Phonic Quality Commitment

Audio Phonic is dedicated to delivering high-quality audio products that meet the expectations of modern Hi-Fi users and audiophiles. The BRZHIFI A20B reflects this commitment through its premium design, careful component selection, and focus on musical authenticity.

Every detail of this amplifier is engineered to provide a natural, warm, and emotionally engaging listening experience.

Technical Specifications of BRZHIFI A20B

Output power: 10W x 2 (8 ohm Class A)

Bluetooth protocol: 5.0
Frequency response: 20Hz -- 25KHz

Total harmonic distortion: 1% (1kHz)
Input sensitivity: 500mV -- 2000mV

Input impedance: 100K
Signal-to-noise ratio: 91dB
Electrodes: 2 x 6N3C, 1 x 6N2

Replacement models: EL34/6P3P/6L6
Dimensions: 172 width x 139 height x 281 depth
Weight: Net weight 6.5KG (including packaging 8KG)

Frequently Asked Questions (FAQs)

What type of amplifier is the BRZHIFI A20B ?

It is a pure Class A tube amplifier using 6N3C vacuum tubes.

What is the output power of this amplifier?

It delivers 10W × 2 output power.

Which tubes are used in this amplifier?

It uses 6N3C power tubes and 6N2 driver tubes, 5Z4P.

Is it suitable for bookshelf speakers?

Yes, it is specifically designed for bookshelf and high-sensitivity speakers.

Does it produce a lot of noise?

No, it has extremely low noise with a dark background.

What makes 6N3C tubes special?

They provide rich harmonics, natural vocals, and smooth high-frequency detail.

Is it suitable for long listening sessions?

Yes, it offers fatigue-free and natural sound for extended use.

What type of music is best for this amplifier?

It is excellent for jazz, classical, acoustic, and vocal music.

Why should I choose BRZHIFI A20B ?

It delivers pure Class A tube sound with natural tone, premium components, and excellent musical detail for audiophile listenin