1pc Dual Power CD2399 Microphone Amplifier Digital Reverb Board KTV Karaoke Delay AC12V Why you need this board Add professionalsounding reverb and delay to any microphone setup without replacing existing equipment. Improve vocal presence and polish for karaoke, KTV, small venues or home studio use. Compact singleboard solution that combines a microphone preamplifier with digital reverb/delay effects for quick, economical upgrades. Key benefits Versatile sound enhancement: The CD2399based digital reverb and delay provide ambient and timebased effects that make vocals sound fuller and more natural. Easy integration: Designed to sit between a microphone and your mixer or amplifier—power with AC12V and route mic signal through the board to add effects instantly. Space and costefficient: One compact board delivers both amplification and reverb capabilities, avoiding larger external effect processors. Main features Model/chip: CD2399based digital reverb board. Functionality: Microphone preamplifier with builtin digital reverb and delay effects suitable for live or recorded vocal use. Power: Dual power design; specified AC12V operation. Quantity: 1pc — single board included. Compatibility and usage Works with common microphone setups that accept an external preamp/effects stage. Connect microphone to the board input and send the board output to a mixer, amplifier or recording interface. Ideal for KTV/karaoke machines, small PA systems, home karaoke setups and practice rigs. Practical use cases 1) Home karaoke: Add reverb and delay to a handheld microphone for a more immersive karaoke experience without buying a full digital effects processor. 2) Small venue or KTV room: Improve lead vocal clarity and presence by inserting the board into the microphone chain to provide adjustable ambience for different songs and performers. 3) Home studio or practice: Use the board as a simple vocal effect/preamp to audition vocal tones and capture wetter sound sources for demos and practice sessions. Simple installation tips Provide AC12V power to the board before operation. Route your microphone into the board input and connect the board output to your mixer or amplifier. Start with conservative reverb/delay settings and adjust to taste to match room acoustics and performance style. What's included One (1pc) Dual Power CD2399 Microphone Amplifier Digital Reverb Board (AC12V). Notes Board format is a dedicated PCB unit intended for integration into existing audio chains. Compatible wiring, connectors and mounting accessories are not included; verify connections and power requirements before installation.