Feature Highlights: 1. Dual-Channel Independent Control – The microphone and music inputs can be output separately or mixed together. Three output ports in total, including a mixed output that can directly drive headphones for monitoring. 2. Dual Microphone Compatibility – The 3.5mm port supports electret and common condenser microphones, while the 6.5mm port works with dynamic microphones. Compatible with both wired and wireless microphone setups. 3. Optimized Gain Levels – Dynamic mic input (6.5mm) amplified 75x, condenser mic input (3.5mm) amplified 22x, and stereo music input (3.5mm) amplified 5x for clear, balanced sound. 4. Stable Power Design – Powered by DC 5-12V using a rail-to-rail operational amplifier (MC33202). For best performance, use a high-quality, low-ripple power supply. 5. Solid Metal Build – Durable metal housing in black finish, compact and built to last. Product Details: This 2-in-1 audio preamplifier allows you to mix microphone and music signals with independent volume control. It supports both dynamic and condenser microphones, and includes a headphone output for real-time monitoring. The circuit is designed for low noise and high clarity, making it ideal for streaming, karaoke, recording, or live performance. Easy to connect and use—just plug in your mics, audio source, and power. Specifications: - Material: Metal - Color: Black - Power Supply: DC 5-12V (DC5.5×2.1 port, inner + / outer –) - Package Includes: 2 × MA-2S Audio Preamplifier - Note: Power adapter not included. Slight color variations may occur due to lighting or screen settings. Dimensions may have a tolerance of +/- 1–3 cm.