
3e Audio A7 Mono Class D Power Amplifier
Key Features
- Working method: Class D
- Output power:
- Total Harmonic Distortion:
- Dynamic Range :>
- Frequency response:
- Input: RCA Lotus Terminals
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
Black
Description
3e Audio A7 Mono Class D Power Amplifier Price in Bangladesh
3e Audio 3e Audio A7 Mono Class D Power Amplifier is a high-end audiophile-grade mono block amplifier designed for users who demand maximum power delivery, ultra-low distortion, and exceptional clarity in their HiFi audio systems. At Audio Phonic, we offer original 3e Audio amplifiers in Bangladesh for serious audiophiles, home theater builders, and professional audio users who want uncompromised sound performance with advanced Class D technology.
The A7 Mono is built around a single Texas Instruments TPA3255 amplifier chip combined with premium OPA1656 operational amplifiers and advanced PFFB architecture. This powerful combination ensures extremely clean signal reproduction, high dynamic range, and powerful output capability, making it ideal for driving demanding speakers in both home and professional environments.
With balanced XLR and RCA inputs, selectable gain options, ultra-high power output, and audiophile-grade internal components, the 3e Audio A7 Mono is designed to deliver reference-level performance for serious stereo and multi-channel HiFi systems.
High-Performance Class D Mono Amplifier Design
The 3e Audio A7 Mono is a dedicated single-channel Class D power amplifier engineered for maximum performance.
Mono block amplifiers are widely preferred in high-end audio systems because they provide:
Dedicated Power per Channel
Each speaker gets a dedicated amplifier for maximum clarity and control.
Improved Sound Separation
Eliminates channel interference for better stereo imaging.
Higher Power Delivery
More efficient power allocation improves dynamic performance.
Better Audio Precision
Dedicated amplification enhances detail and accuracy.
The A7 Mono takes these benefits further with advanced Class D engineering.
Texas Instruments TPA3255 Amplifier Chip
At the core of the A7 Mono is the powerful Texas Instruments TPA3255 amplifier chip.
This chip is widely recognized in the audiophile community for its exceptional performance.
Ultra-Low Distortion Performance
Ensures clean and transparent audio reproduction.
High Power Efficiency
Delivers strong output while minimizing heat generation.
Excellent Dynamic Response
Improves bass impact and transient accuracy.
Wide Frequency Response
Maintains full-range audio clarity and balance.
The single-chip mono configuration allows the amplifier to deliver maximum power per channel without compromise.
Premium OPA1656 Operational Amplifiers
The A7 Mono uses dual OPA1656 operational amplifiers for signal processing.
These high-quality op-amps are known for:
Low Noise Operation
Reduces unwanted hiss and interference.
High Audio Accuracy
Preserves fine musical detail and tonal balance.
Improved Sound Transparency
Allows natural and realistic audio reproduction.
Enhanced Stereo System Matching
Perfect for use in high-end mono block setups.
The OPA1656 ensures the amplifier maintains audiophile-grade signal purity.
Advanced PFFB Architecture
The amplifier features Post Filter Feedback (PFFB) technology.
PFFB significantly improves Class D amplifier performance by:
Stabilizing Frequency Response
Maintains consistent sound across different speakers.
Reducing Distortion
Improves clarity and tonal accuracy.
Enhancing Speaker Compatibility
Works effectively with various impedance loads.
Improving Overall Sound Quality
Delivers smoother and more natural audio output.
This advanced architecture is one of the key reasons the A7 Mono performs at such a high level.
Flexible Input Connectivity Options
The 3e Audio A7 Mono supports multiple input options for versatile system integration.
RCA Single-Ended Input
Suitable for DACs, preamps, CD players, and standard audio sources.
Balanced XLR / 6.35mm Combo Input
Professional-grade balanced input for superior noise rejection.
This dual input system allows compatibility with both consumer and professional audio setups.
Advantages of Balanced Input System
Balanced audio input provides significant improvements in performance.
Reduced Electrical Noise
Minimizes interference in long cable runs.
Improved Signal Integrity
Ensures cleaner audio transmission.
Higher Dynamic Range
Preserves detail and clarity in high-resolution audio.
Professional Audio Compatibility
Ideal for studio and high-end HiFi systems.
Balanced input makes the A7 Mono suitable for reference-level setups.
Outstanding Audio Performance Specifications
The 3e Audio A7 Mono delivers exceptional technical performance.
Extremely Low THD+N
RCA Input
0.0007% @ 4Ω
0.0006% @ 8Ω
XLR Input
0.0006% @ 4Ω
0.0005% @ 8Ω
These ultra-low distortion levels ensure highly accurate sound reproduction.
High Signal-to-Noise Ratio
RCA Input
123dB
XLR Input
126dB
This ensures a clean and quiet background for detailed audio playback.
Wide Dynamic Range
Up to 126dB dynamic range provides highly expressive sound performance.
Extended Frequency Response
20Hz–35KHz frequency response ensures full-range audio clarity.
These specifications place the A7 Mono in the high-end audiophile category.
Powerful Mono Output Performance
The 3e Audio A7 Mono is designed for serious power delivery.
Output Power at Different Loads
2Ω Load
480W (1% THD+N)
600W (10% THD+N)
4Ω Load
260W (1% THD+N)
320W (10% THD+N)
8Ω Load
150W (1% THD+N)
200W (10% THD+N)
This high power output makes the amplifier suitable for demanding speaker systems.
Ideal for High-End Speakers
Perfect for floor-standing and large bookshelf speakers.
Excellent Bass Control
Delivers tight and powerful low-frequency performance.
High Headroom Performance
Maintains clarity even at high volume levels.
Professional Audio Systems
Suitable for studio monitoring and advanced HiFi setups.
Exceptional Crosstalk Performance
Since this is a mono amplifier, channel separation is inherently perfect.
However, internal design ensures:
Ultra-Low Interference
Crosstalk reaches extremely low levels (-120dB to -130dB in design performance).
Pure Signal Path
No channel contamination or interference.
Improved Audio Accuracy
Ensures precise and focused sound reproduction.
This makes mono block amplification ideal for high-end stereo systems when used in pairs.
Ultra-Low Noise Floor
The A7 Mono maintains extremely low noise levels.
Noise Performance
RCA Input
Below 20uVrms
XLR Input
Below 15uVrms
This ensures:
Silent Background
No unwanted hiss during playback.
High Detail Retrieval
Subtle musical details become more audible.
Improved Listening Experience
Cleaner and more immersive sound quality.
Gain Control and Flexibility
The amplifier includes adjustable gain settings for system optimization.
RCA Gain
26dB / 29dB
XLR Gain
20dB
Benefits of Gain Control
Better System Matching
Optimizes performance with different DACs and preamps.
Flexible Setup Options
Suitable for both low and high output sources.
Improved Audio Balance
Helps fine-tune system performance.
Wide Speaker Compatibility
The A7 Mono supports speaker impedance from 2Ω to 16Ω.
Versatile System Integration
Works with a wide range of speakers.
Stable Operation
Ensures reliable performance under different loads.
High Flexibility
Suitable for custom HiFi system building.
Efficient Power Consumption
Despite its high power output, the amplifier remains efficient.
Power Usage
OFF: Less than 0.4W
ON (idle): 6W
This ensures energy-efficient operation for daily use.
Compact and Heavy-Duty Design
The 3e Audio A7 Mono is compact yet powerful.
Dimensions
170 × 168 × 46 mm
Weight
1 KG
Design Benefits
Space Saving
Easy to integrate into audio racks and setups.
Solid Build Quality
Durable aluminum chassis construction.
Premium Appearance
Minimalist and professional HiFi design.
High-Quality Power Supply Included
The amplifier comes with a 48V 10A power adapter.
Stable Power Delivery
Ensures consistent performance under heavy load.
High Current Capability
Supports powerful dynamic audio output.
Dual Voltage Compatibility
Works with 110V and 230V systems.
Package Contents
3e Audio A7 Mono Amplifier
Single-channel Class D mono block unit.
48V 10A Power Adapter
High-performance dedicated power supply.
Ideal Use Cases for Audiophiles
The 3e Audio A7 Mono is perfect for:
High-End Stereo Systems
Use two units for superior stereo separation.
Home Theater Systems
Provides powerful dedicated channel amplification.
Audiophile Speaker Systems
Drives demanding speakers with precision.
Professional Audio Applications
Suitable for studio and monitoring environments.
Custom HiFi Builds
Ideal for advanced audio system designers.
Why Buy 3e Audio A7 Mono from Audio Phonic
Audio Phonic is a trusted source for premium HiFi audio equipment in Bangladesh.
When purchasing from Audio Phonic, customers receive:
Original 3e Audio Products
Guaranteed authentic amplifier with premium quality assurance.
Competitive Price in Bangladesh
Affordable pricing for audiophile-grade equipment.
Professional Customer Support
Expert guidance for setup and system integration.
Trusted Audio Shopping Experience
Reliable service for music lovers and audiophiles across Bangladesh.
FAQs About 3e Audio A7 Mono Class D Power Amplifier
What amplifier chip is used in the A7 Mono?
It uses a single Texas Instruments TPA3255 Class D amplifier chip.
Is the A7 Mono suitable for stereo systems?
Yes, two units can be used as mono blocks for stereo setups.
What is the maximum output power?
Up to 600W at 2Ω under 10% THD+N conditions.
Does it support balanced input?
Yes, it supports XLR and 6.35mm balanced input.
What is the frequency response?
20Hz–35KHz.
What speaker impedance is supported?
2Ω to 16Ω speakers are supported.
Does it include gain control?
Yes, it supports adjustable gain settings for system matching.
Is it energy efficient?
Yes, it has low power consumption in idle and standby modes.
What power supply is included?
A 48V 10A mains adapter is included in the package.
Where can I buy the A7 Mono in Bangladesh?
You can purchase the original 3e Audio A7 Mono Class D Power Amplifier from Audio Phonic in Bangladesh.





















