Great effect tool - tool - tool - tool!! Can be used for various audio systems, karaoke, P.A. toys, or just for fun,...
Features:

1. 4 Adjustments for MIC or input level, volume or output level, echo delay time, and feedback.
2. 40 Kb SRAM for low distortion and good sound quality
3. onboard microphone and audio amplifier
4. line-In & Line-out connection
5. 9V battery snap included

Specifications:

1. power supply: 9V battery (6LR61 not incl.) or 9...12V DC regulated
2. power consumption: 150mA max.
3. delay time: 80…200ms
4. speaker output: 500mW (8 ohm, 10% THD)
5. dimensions: 85 x 70 x 20mm / 3.35 x 2.76 x 0.78"

manual_wsah182.pdf

schematic_diagram_mk182.pdf

module_diy_kit_guide.pdf