The Plexi Heritage preamp pedal is based on vintage Plexi Marshall amplifiers, using real tubes and high voltage. Not a simulation effect pedal, the Plexi brings real tube preamp sweetness that emulates the classic Plexi Amp overdrive beautifully. Perfect for guitar or bass, the two channels can be selected individually or at the same time. Xtonebox uses only the highest quality components and point to point circuitry construction to remain faithful to the vintage Plexi tone you want to hear. This is one of the most awe inspiring pedals right out of the box, and the warm smooth tones you can push through the two ECC83’s make this the perfect true amp replacement sent through your amp’s clean channel, or your DI in the studio.