The TC Electronic Thunderstorm is a vintage-style flanger pedal featuring a classic all-analog Bucket-Brigade (BBD) circuit. It is known for producing everything from subtle chorus and tape-like sweeps to dramatic "jet engine" sounds. [1, 2, 3, 4]Key Features

• All-Analog BBD Circuit: Delivers warm, three-dimensional modulation tones reminiscent of legendary 1970s and 80s effects.
• Roadworthy Build: Housed in a solid, "built-like-a-tank" bent metal chassis with top-mounted I/O jacks to save valuable pedalboard space.
• True Bypass: Ensures your dry signal remains completely unaffected and pristine when the pedal is disengaged.
• Power: Can be powered by a standard 9V battery or a 9V DC power supply (such as the TC Electronic Powerplug, sold separately). [1, 2, 3, 4]

Controls

• Rate: Adjusts the speed/frequency of the flanging effect.
• Depth: Controls the width or intensity of the sweep.
• Manual: Shapes the character of the flange by manually adjusting the center delay time.
• Feedback: Sets the amount and type of resonance, dialing in how much of the signal is fed back into the circuit. [1, 2, 3]