The Tube Echo TD-X is a hybrid digital/analog delay unit from the Guyatone Flip Series, developed in collaboration with Godlyke, Inc. It combines Guyatone's MD-3 Micro Delay circuit, which offers up to 2600 milliseconds of delay time with standard controls (Level, Time, Feedback) and Short, Medium, and Long range switching. The TD-X's unique feature is a custom filter array and a 12AX7 tube to authentically emulate vintage analog and tape echo tones. It includes an Analog Simulation control for blending in tube saturation on repeats and a Tape Simulation knob that applies a preset EQ curve (cuts highs/ultra-lows, boosts lows/mids) for a vintage echo sound. The pedal also features True Bypass Switching and dual Outputs (Wet and Dry) for stereo setups.