The Galaxy Audio CRICKET Speaker Polarity/Continuity/ Tester

The CRICKET Polarity Tester is a two-piece unit ('Send' & 'Receive'). The Send unit generates a 'pulse', which is sent through the speaker, cable, microphone, or the device being tested. The Receive unit interprets that pulse and indicates if that pulse is positive or negative. The bottom of each unit has a quick reference guide on how to understand the readings given. The CRICKET Polarity Test Set is easy to use, necessary to own, and not a lot of money. The CRICKET speaker phase tester is suggested for anybody working with sound systems.
Checks continuity and polarity
1/4" TRS and XLR in/out 
Tests speakers, mics, cables and wireless systems
Tests mixers and signal processors for polarity inversions
Internal speaker for testing mic polarity
Internal mic for testing speakers
High level output for testing miles of cable
Battery test on Receive module saves troubleshooting time