NU-X Drive Core Deluxe PedalBlues to the Core! NU X Drive Core Deluxe All time favorite tube screamer circuit comes with more features and additional dial up options. Drive Core Deluxe is an analog overdrive pedal which can carry your signal in 3 different ways for your essential needs. You can use the pedal as a Clean Boost or Overdrive or you can Mix up the clean signals with tube heated drive sound. The Tone knob gives the last shape to your signal and controls the balance