Capture the organic, tube-driven spring reverb found in vintage amplifiers.

The True Spring Reverb by Source Audio delivers drippy reflections and animated trails, faithfully recreating the spring reverb circuits of classic blackface Fender amps and outboard tanks like the Fender 6G15. It also features three tremolo styles—Optical, Bias, and Harmonic—allowing users to pair classic amp tremolo with lush spring reverb for a fully immersive tone.

Key Features

• Three Spring Reverb Modes – Select between:

  • Short Spring – Modeled after blackface Fender amps, offering tight decay and smooth trails.

  • Long Spring – Produces longer, deeper reverb decays with noticeable drip.

  • Tank Spring – Captures the tube-driven outboard spring tanks of the 1960s, delivering bouncing, delay-like reflections.

• Three Tremolo Styles – Choose between:

  • Optical Tremolo – Found in many 1960s combo amps, using a photocell circuit for smooth modulation.

  • Bias Tremolo – Alters tube bias voltage, creating organic, pulsing amplitude shifts.

  • Harmonic Tremolo – Found in brownface Fender amps (1959–1963), splitting high and low frequencies for a swirling, phase-like effect.

• Stereo Routing Options – Supports Mono-to-Mono, Stereo-to-Stereo, Mono-to-Stereo, Stereo Sum-to-Mono, and External Loop configurations.

• Neuro Editor Compatibility – Use the Neuro Desktop Editor & Mobile App to customize parameters, store presets, and access user-created sounds.

• Preset Mode – Save and recall reverb/tremolo effects and knob positions for instant access.

• Universal Bypass™ System – Select between true bypass or buffered bypass, ensuring transparent signal integrity.

Specifications

• Reverb Engines – Short Spring, Long Spring, Tank Spring.

• Tremolo Modes – Optical, Bias, Harmonic.

• Controls – Mix, Level, Dwell, Trem Speed, Trem Depth.

• Inputs/Outputs – Stereo In, Stereo Out, MIDI I/O.

• Power Requirements – 9V DC, 200mA.

• Dimensions – 4.5” x 4.5” x 2”.