Classic amp tones in a compact pedal The Direct-Drive is an amp simulator designed for your pedalboard, providing a realistic amp tone that can be connected directly to the PA system. Three amplifier voicing options are provided: the first is the popular JDX tone which simulates the sound of an dynamic microphone on a 4x12 cabinet. The second setting is similar in character to a British tube head amplifier, while the remaining tone is modeled after a clean twin combo amp. With three classic voicings available, the Direct-Drive provides a natural amp tone through the PA system and consistency from night to night.