DELTA MP-1/R Audio Preamplifier Module with Tone Control

The DELTA MP-1/R is a versatile audio preamplifier module designed for DIY audio systems, car audio, and home audio applications. Featuring the PT2313L audio processor IC, it provides comprehensive tone control including bass, treble, balance, and volume adjustment with a switchable loudness function. The module accepts three stereo inputs and outputs one stereo signal, making it ideal for integrating multiple audio sources.

Advantages

Compact and easy to integrate, the MP-1/R offers precise audio adjustments with low distortion and high signal-to-noise ratio. Its electronic input switching ensures reliable source selection, while the wide frequency response maintains audio fidelity across the audible spectrum.

Suitable for

• DIY audio preamplifier projects
• Car audio system upgrades
• Home audio preamplifier builds
• Custom audio installations requiring tone control

Key specifications

• Audio Processor IC: PT2313L
• Number of Audio Inputs: 3 Stereo (6 channels)
• Number of Audio Outputs: 1 Stereo (2 channels)
• Volume Control Range: 0 to -79 dB (1 dB step)
• Bass Control Range: ±14 dB (2 dB step)
• Treble Control Range: ±14 dB (2 dB step)
• Balance Control Range: ±20 dB (1 dB step)
• Loudness Function: Switchable
• Power Supply Voltage: 7V - 12V DC
• Current Consumption: ~25 mA
• Input Impedance: 50 kΩ
• Output Impedance: 1 kΩ
• Frequency Response: 20 Hz - 20 kHz
• Signal-to-Noise Ratio: >80 dB
• Total Harmonic Distortion: <0.1%
• Control Method: External Potentiometers/Switches

Recommendations

For optimal performance, use a regulated DC power supply within 7-12V. Connect external potentiometers for volume, bass, treble, and balance control. The module is best suited for experienced DIY enthusiasts.