Alter 500

Classic FET Architecture, Refined
Alter 500 is built around a fast, responsive FET compression topology inspired by the iconic limiting amplifiers of the 1970s. Designed as a single-channel 500-series module, it delivers the unmistakable punch, presence, and immediacy that FET compressors are known for, while offering expanded control and modern reliability for today’s studios.

Slam Mode for Aggressive Dynamics
A dedicated Slam Mode switch engages extreme limiting behavior independent of the ratio selection. This allows engineers to achieve explosive compression effects, dense harmonics, and forward energy without sacrificing consistency or control.

Stepped Controls for Precision and Recall
All primary controls are fully stepped, enabling precise, repeatable settings that are ideal for recall-critical workflows. Separate input and output gain stages allow accurate gain staging while shaping tone and impact.

Studio-Grade Signal Path
The electronically balanced input feeds a discrete dual-stage amplifier design, while the IGS Custom output transformer delivers depth, punch, and harmonic weight. A relay-based hard bypass preserves complete signal integrity, and a 20-segment LED bar provides fast, accurate gain-reduction feedback.

Designed for Vocals, Drums, and Impact-Driven Sources
With ultra-fast attack options and selectable release times, Alter 500 excels on vocals, drums, guitars, and parallel compression duties, making it a powerful and versatile dynamics processor in any 500-series rack.