InstallBay Audio Tone Generator & Polarity Tester

Perfect for safely troubleshooting and testing audio systems. Offers an output range of 0-8 volts at a variable 10 kHz to 13Hz tone for setting system levels, checking speaker x-over points, verifying connections and general troubleshooting. The MTIBR68 also has a 9v speaker popper for visually testing speaker connection polarity. Connections can be made via supplied RCA or alligator clips. It features an auto shutoff for extended battery life; small size for handheld use and knurled control knobs for easy tone and level adjustments.