ZVex Sonar Tremolo/Machine Pulser Vexter
$249
Chicago Music Exchange
The Sonar is a tremolo/machine pulser that will work with higher-gain amps, which is always a challenge. The key to this type of device is achieving absolute dead silence during the "off" time, and Vex's engineer Joel totally pulled that off. You can easily use the Sonar BEFORE a fuzz or heavy...