High-Fidelity Audio Amplifier Module

Product Specifications

Technical details and manufacturing context for High-Fidelity Audio Amplifier Module

Definition

This product is a specialized printed circuit board (PCB) assembly designed to amplify low-power audio signals to drive speakers in consumer electronics. It serves as the core audio processing unit in home entertainment systems, smart speakers, and portable audio devices. Manufacturers integrate these modules into final products to ensure consistent audio quality across production batches. The module represents a critical B2B supply chain component where audio performance specifications directly impact end-product market positioning.

The module operates on a DC supply voltage of 24 V ±10% and delivers continuous RMS output power of 50–100 watts per channel into typical speaker loads. It maintains total harmonic distortion of ≤0.01% at rated output, a frequency response of 20–20000 Hz (±3 dB), and a signal-to-noise ratio of ≥100 dB. Input impedance is 47 kΩ, output impedance is ≤0.1 Ω (damping factor >80 at 8 Ω), and gain is adjustable via internal jumper between 26 and 30 dB. The operating temperature range is -40 to 85 °C with full performance from -20 to 70 °C, and humidity range is 5–95% RH non-condensing. The ingress protection rating is IP54–IP65 with optional conformal coating. Dimensions are 120 × 80 × 30 mm (board only, excluding connectors), and weight is 150–200 g depending on heatsink option.

Key materials include FR-4 PCB substrate, surface-mount semiconductor components, copper traces, and thermal interface material. The module is designed for integration into consumer electronics and is not a standalone end product. Verification of model-specific values and standards with the legal manufacturer or supplier is required before procurement or use.

Working Principle

The module receives low-voltage audio input signals, processes them through amplification circuitry (typically class-D or class-AB topology), and outputs higher-power signals to drive speakers while maintaining signal fidelity. The input stage conditions the signal, the amplification stage increases power, and the output stage delivers current to the speaker load. Feedback and protection circuits ensure stable operation within specified limits.

Common Materials

FR-4 PCB substrate, Surface-mount semiconductor components, Copper traces, Thermal interface material

Technical Parameters

Parameter	Typical range	Notes & selection driver
Output Power per ChannelRequired	50–100 watts	Continuous RMS power output capabilityIEC 60268-3
Total Harmonic DistortionRequired	≤0.01 %	Maximum distortion at rated outputIEC 60268-3
Frequency ResponseRequired	20–20000 Hz	Useable frequency range (±3dB)IEC 60268-3
Signal-to-Noise RatioRequired	≥100 dB	Ratio of signal power to noise powerIEC 60268-3
Input Impedance	47 kΩ	Electrical impedance at input terminals
Operating VoltageRequired	24 ±10% volts	Required DC power supply voltage
Output Impedance	≤0.1 Ω	Damping factor >80 at 8 Ω
Gain	26–30 dB	Adjustable via internal jumper
Operating Temperature Range	-40–85 °C	Full performance from -20 to 70 °CIEC 60068-2-1, IEC 60068-2-2
Humidity Range	5–95 % RH	Non-condensingIEC 60068-2-78
Ingress Protection Rating	IP54–IP65	Conformal coating optional for IP65IEC 60529
Dimensions	120 × 80 × 30 mm	Board only, excluding connectors
Weight	150–200 g	Depending on heatsink option

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Amplifier IC Part
Primary signal amplification

Material: Silicon semiconductor
Power Supply Filter Part
Filters DC power supply noise

Material: Electrolytic capacitors, inductors
Input Buffer Circuit Part
Impedance matching and signal conditioning

Material: Operational amplifier ICs, resistors
Output Protection Circuit Optional Part
Protects against short circuits and thermal overload

Material: MOSFETs, thermal sensors
Heat Sink Optional Part
Dissipates thermal energy from amplifier components

Material: Aluminum alloy

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Fidelity Audio Amplifier Module.

Manufacturers of High-Fidelity Audio Amplifier Module

Manufacturer profiles associated with High-Fidelity Audio Amplifier Module.

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Frequently Asked Questions

What is the typical application of this audio amplifier module?

It is used as the core audio processing unit in home entertainment systems, smart speakers, and portable audio devices. Manufacturers integrate it into final products to ensure consistent audio quality.

What are the key electrical specifications?

Output power is 50-100 W RMS per channel, total harmonic distortion is ≤0.01%, frequency response is 20-20000 Hz, signal-to-noise ratio is ≥100 dB, input impedance is 47 kΩ, and operating voltage is 24 V ±10%.

What standards are referenced for verification?

Audio parameters reference IEC 60268-3. Temperature and humidity testing reference IEC 60068-2-1, IEC 60068-2-2, and IEC 60068-2-78. Ingress protection references IEC 60529. These are procurement references, not proof of certification.

How should I verify the module's suitability for my product?

Contact the legal manufacturer or supplier to confirm model-specific values, including output power, distortion, frequency response, and environmental ratings, as well as compliance with applicable standards for your target market.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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voltage:	±12V to ±18V DC supply range
temperature:	-40°C to +85°C (operating), -55°C to +125°C (storage)
power output:	50W RMS per channel maximum
hum noise ratio:	>100dB
frequency response:	20Hz to 20kHz ±0.5dB

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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