I have a sr655hp and was wondering how do I shut the echo off? Shawn November 14, 2016 22:00 Updated Find the VOL/DEL Knob, turn the VOL (rectangular shape) to the left until it clicks. The echo is now off. Related articles SR-655HPC Setup Guide SR-655HPC Manual Does the variable power just set the dead key or adjust the power itself? How do I put my name on the screen? SR-447HPC / SR-497HPC Setup Guide Comments 0 comments Article is closed for comments.