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LM324E SMD Bass Treble Preamplifier Board – Dual-Channel 12V-24V DC Audio Tone Control Module with Integrated Volume, Bass, and Treble Adjustments

Parameter	Detailed Specification
Operational Amplifier	LM324 (Low-Power Quad Op-Amp)
Technology	SMD (Surface Mount Device) for Compact Profile
Operating Voltage	DC 12V to 24V (Wide Range)
Channels	2.0 Channel (Stereo)
Control Interface	3 Potentiometers (Volume, Bass, Treble)
Input/Output	Standard Audio Line-Level

Price

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₹ 122.88

(Tax included)

बारकोड: 197041

Product Description

The LM324E SMD Bass Treble Preamplifier Board is a professional-grade audio processing module designed to give you total control over your sound signature. Utilizing the high-performance LM324 operational amplifier in an SMD configuration, this board provides active tone filtering with minimal noise and distortion. At Robogears, we recommend this pre-amp as a bridge between your audio source (like a Bluetooth module) and your power amplifier. It allows you to boost the low-end frequencies for deep bass and sharpen the high-end for crisp treble, all while managing the master volume. Its wide 12V-24V operating range makes it perfectly compatible with standard 12V car audio systems or 24V industrial power supplies.

Detailed Key Features

Active Tone Control System: Unlike passive tone circuits that "cut" frequencies, this active pre-amp can boost signals, ensuring your audio remains powerful and dynamic.
SMD Precision Components: The surface-mount design reduces the PCB footprint and minimizes parasitic capacitance, resulting in a cleaner, more stable audio signal.
Three-Way Adjustment: Features dedicated potentiometers for Bass, Treble, and Master Volume, providing a customized listening experience.
Wide Voltage Versatility: Engineered to work flawlessly across a broad DC spectrum, making it ideal for both DIY home theater and automotive audio upgrades.
Low Noise Interference: The LM324 chip is selected for its reliable performance and low power consumption, ensuring that no "hiss" is added to your audio path.

All Technical Details

Frequency Response: 20Hz to 20KHz for full-range audio fidelity.
Signal Handling: Optimized for line-level inputs from phones, PCs, or MP3 decoders.
Mounting Design: Potentiometers are typically spaced for easy panel mounting in custom enclosures.
Board Profile: Ultra-slim design allowed by the use of SMD components, making it easy to fit into tight chassis spaces.

Prototyping & Engineering Tips (Robogears Exclusive)

Pre-Amp Order: This board is a Preamplifier. You must connect the output of this board to a power amplifier (like our PAG4060 or TPA3116) to drive speakers. Connecting speakers directly to this board will not produce sound and may damage the op-amp.
Clean Power is Key: In your Pimpri workshop, always use a well-regulated DC supply. If you hear a "humming" sound, it is likely AC ripple from your power adapter; adding a 1000µF capacitor across the power input can help.
Shielding for Clarity: For the best high-fidelity results, use shielded audio cables for all input and output connections. This prevents the high-gain LM324 from picking up stray electromagnetic interference from nearby motors or power transformers.
Knob Installation: If you are mounting this in a wooden or metal box, ensure the potentiometers are tightened securely. We recommend using aluminum or plastic knobs for a professional tactile feel.

Package Includes

1 x LM324E SMD Bass Treble Preamplifier Board

Image Disclaimer

Image shown is for illustrative purposes only; the actual product may vary slightly in PCB color or potentiometer knob style due to manufacturing updates, though all technical specifications will remain as described.

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