TD-X TUBE ECHO: The TD-X takes the popular MD-3 Micro Delay circuit and combines it with a custom-designed filter array that allows the TD-X to emulate a vast variety of vintage and modern delay sounds. Like the MD-3, the TD-X features 2600 milliseconds of delay time with Delay Level, Delay Time, and Feedback controls with switchable Short, Medium and Long delay ranges. Using these controls an entire range of classic delay effects can be achieved; from rockabilly slapback to Arena-rock washes of excess to sound on sound layering that slowly fades into infinity. Also ilike the MD-3, the TD-X can be used to create erratic, runaway echoes and self-oscillation by manipulating the Delay Time and Feedback controls.