1-Air

1-Air is a one-knob high-frequency processing module combining a shelving EQ, harmonic excitation, and a safety limiter. It is intended for adding brightness and clarity without harshness or unwanted resonance.

The effect operates through three main stages:

• High-Shelf Filter: A frequency-dependent boost between 8 kHz and 12 kHz with up to +12 dB of gain.
• Harmonic Exciter: A 6 kHz high-pass stage followed by mild non-linear processing, introducing additional harmonics blended back with the dry signal.
• Limiter/Soft Clipper: Ensures output stability by preventing excessive peaks at high boost levels.

All parameters are internally linked to a single control, allowing smooth transition from a flat response to maximum enhancement. The processing is stereo and designed to maintain tonal balance across different source materials.