XH-A902 Audio Operational NE5532 Based Preamplifier Board

XH-A902 Audio Operational NE5532 Based Preamplifier BoardThis high-performance XH-A902 Audio Operational NE5532 Based Preamplifier Board is designed to pre-amplify analog audio signals before sending them to a main power amplifier stage. Furthermore, it is built around the legendary NE5532 operational amplifier IC, which is widely renowned for its low noise, high output drive capability, and exceptional fidelity. Consequently, it elevates weak audio sources to optimal levels while maintaining minimal distortion. Therefore, it is an essential component for upgrading DIY audio systems, custom active speakers, and desktop sound setups. However, users must ensure a stable DC power supply voltage within the recommended range to prevent clipping or operational noise. Specifically, the board features a compact layout with clear input and output terminal markings for straightforward integration. Moreover, the dual-channel design supports full stereo pre-amplification. Ultimately, this preamplifier module provides a clean and reliable front-end audio processing solution.

Key Features:

• NE5532 Op-Amp Core: Utilizes the classic low-noise dual operational amplifier IC for superior audio clarity and performance.
• Dual-Channel Stereo: Supports independent left and right audio signal amplification channels.
• Low Distortion Output: Enhances audio signal strength while preserving dynamic range and minimizing background hiss.
• Compact PCB Layout: Designed for easy mounting inside tight enclosures and custom audio gear.
• Power Indicator LED: Onboard red LED provides instant visual confirmation of active power status.
• Flexible Power Input: Accommodates standard DC voltage configurations suitable for various audio setups.

Technical Specifications:

• Amplifier IC: NE5532 (Dual Operational Amplifier)
• Number of Channels: 2 Channels (Stereo Left and Right)
• Input Voltage: DC 12V to 24V (or dual AC/DC configurations depending on board revision)
• Magnification / Gain: Fixed pre-amplification gain stage
• Operating Temperature Range: −20°C to +85°C

Mechanical Specifications:

• PCB Substrate: Green FR4 Fiberglass Board
• Input/Output Connectors: White JST-style spacing headers and solder holes
• Power Connector: Red 2-pin JST connector with wire leads
• Mounting: Four pre-drilled corner holes for secure chassis installation

Dimensions:

• Board Length: 50.0 mm (1.97 in)
• Board Width: 30.0 mm (1.18 in)
• Mounting Hole Pitch (Length): 43.0 mm (1.69 in)
• Mounting Hole Pitch (Width): 23.0 mm (0.91 in)
• Height: ≈ 15.0 mm

Pinout and Wiring:

• INL / INR: Left and Right audio signal input terminals (connect to source like phone DAC or Bluetooth receiver).
• OUTL / OUTR: Left and Right pre-amplified audio output terminals (connect to power amplifier input).
• VCC: Positive DC power supply input.
• GND: Common system ground reference.

Datasheet Reference:

• Download Texas Instruments NE5532 Operational Amplifier Datasheet

Commonly Used in:

• DIY Audio Preamps: Boosting weak signals before feeding them into power amplifier boards like the TPA3116 or PAM8610.
• Turntable Pre-stages: Serving as a foundational building block for custom audio signal processing.
• Multimedia Sound Systems: Enhancing signal quality in custom desktop speaker builds.

Applications:

• Signal Level Boosting: Elevating low line-out audio signals to match power amplifier input sensitivities.
• Active Filter Front-Ends: Acting as the initial gain stage in custom frequency-splitting audio projects.
• Consequently, it helps eliminate weak volume issues encountered when driving high-power amplifier modules directly from passive sources.

Equivalent Models:

• XH-A901 Tone Board: A similar preamplifier module featuring treble, bass, and volume tone control potentiometer knobs.
• OPA2134 Audio Op-Amp Board: A high-end audiophile alternative utilizing Burr-Brown operational amplifiers.
• NE5532 Single-Supply Preamp Module: Alternative layout optimized for single-battery or single-rail DC sources.

Package Includes:

• 1 x XH-A902 Audio Operational NE5532 Based Preamplifier Board
• 1 x 2-Pin Power Cable Lead