The Behringer Spring Reverberation 646 is an authentic all-analog recreation of the legendary Grampian Type 636 reverberation unit from the 1960s. Famous for being a "secret weapon" for artists like Pete Townshend and dub pioneer Lee "Scratch" Perry, this unit combines a dual mechanical spring tank with a high-character analog preamp. It is designed to deliver the unmistakable "sproing," drip, and harmonic grit that digital emulations cannot replicate.

• Dual Mechanical Springs: Features a genuine internal spring tank that provides rich, dynamic reflections with a natural decay of approximately 2 seconds.

• Integrated Overload Circuit: Includes a signature analog overdrive circuit that allows you to add warm, saturated distortion to your signal before it hits the springs—perfect for creating aggressive, lo-fi textures.

• Versatile Connectivity: Equipped with dedicated Mic and Aux channels, accepting balanced/unbalanced microphones and high/low level line signals (keyboards, guitars, or studio sends).

• Dual-Format Design: Ships in a rugged, "built-like-a-tank" desktop metal enclosure but is fully Eurorack compatible (72HP). The main module can be easily removed and installed into a standard modular case.

• Remote Mute Capability: Features a footswitch input for remote muting of the reverb path, allowing for rhythmic "dub-style" echoes and performance flexibility.

• Tactile Controls: Includes large vintage-style knobs for Reverberate (Mix), Aux Channel, and Mic Channel levels.