Microphone Echo / delay / surround circuit diagram needed

[khossanr]

Dear All,
I need Microphone Echo / delay / surround circuit diagram urgently & also asking 200RMS - 400RMS transistor audio amplifier, if u have please help me asap.

 

[FvM]

For the effects application range, there's a profound internet site tonepad -- a resource for d.i.y. music projects, which has been suggested by Edaboard members. Some good PA circuits have been also published respectively linked at edaboard, just search.