The M273 Amplifier Board combines a PT2399 based processing path with a NE5532 amplifier module to create a clear, blended vocal and music output. Key benefits Seamless vocal and music blending for karaoke, practice, or small performances. Dynamic microphone compatibility ensures reliable performance with common mics. Flexible power options support both portable and fixed setups (DC 1224V or AC 512V). Compact, straightforward design designed for easy integration into home or small venue systems. Key specifications and features Model: M273 Amplifier Board ICs: PT2399 processing for blending and audio handling; NE5532 amplifier module for clear amplification Microphone compatibility: Compatible only with dynamic microphones; not suitable for condenser mics or headset mics Power supply: Supports DC 1224V or AC 512V Intended use: Karaoke, music playback, voice amplification, and tailored audio blending What makes it practical Easy integration with standard audio devices to improve vocal clarity and backing track balance Suitable for setups where a simple, dedicated karaoke or blending board is preferred over a full mixer Provides adjustable audio blending to suit different voices and music styles Use scenarios Home karaoke and family entertainment: connect a dynamic microphone and a playback device, then use the blending control to achieve clear vocals with balanced background music. Small events and venues: portable karaoke or speaking system for cafes, classrooms, parties, or small gatherings that require dependable mic and music blending. practice or entertainment room: rehearse with backing tracks, adjusting mic presence and music mix for frequent practice sessions. Notes Not compatible with condenser microphones or headset microphones Ensure power supply matches the DC 1224V or AC 512V specification for reliable operation This description preserves the original model and functions while presenting clear, customerfriendly benefits and practical usage.