Cusack Tap-A-Scream V1 OverdriveWHAT STARTED AS A JOKE BECAME THE WORLDS FIRST AND ONLY TAP TEMPO OVERDRIVE. The Cusack Effects Tap A Scream is our Screamer overdrive pedal with our Tap Tempo engine. But what is there to tap tempo on an overdrive, you ask? The gain of course. Best described sonically as an overdriven tremelo, the Tap A Scream has all the same features of the Screamer, while the 24 waveforms modulate the gain. The Random wave (bank C, wave 8) is actually no