Feature Highlights: 1. High Gain Amplification – Boosts amplifier dynamics by approximately 100 times, capacitors by about 22 times, and music signals by roughly 5 times, delivering clear and powerful audio enhancement. 2. Versatile Output – The mixed output can directly drive headphones, making it ideal for personal monitoring or casual listening. 3. Flexible Voltage Compatibility – Works across a range of supply voltages. Higher voltages support larger signals with less clipping, while lower voltages still perform well with moderate input levels. Choose your power supply wisely based on your signal strength. 4. Clean Power Design – Designed for use with a high-quality, low-ripple power supply to minimize noise and ensure clear audio performance. 5. Easy Connectivity – Features a DC 5.5×2.1mm power jack (inner positive, outer negative) for simple setup. Power adapter is not included. Product Details: The MA-2S Audio Preamplifier is a compact and efficient mixing board designed to boost microphone and audio signals with high gain and low noise. Built for ease of use, it requires no complicated setup—just connect your microphone and power supply. Its sturdy plastic housing ensures durability, while the intelligent circuit design prevents distortion even at higher gain levels. Perfect for streaming, recording, podcasting, or live vocal amplification. Specifications: - Color: Black - Material: Plastic - Power Interface: DC 5.5×2.1mm (Center Positive) - Package Includes: 2 × MA-2S Audio Preamplifier Board Note: Power adapter is not included. Please use a stable, low-ripple power supply for best performance. Slight color variations may occur due to lighting and screen differences. Product dimensions may have a tolerance of +/- 1–3 cm.