SILQ

A modern mastering system combining a dedicated M/S stereo width plugin (AU/VST3) with the harmonic transformer character of the SILQ Nebula Library.

Two Components, One System

SILQ is made up of two complementary parts: the SILQ WIDTH audio plugin and the SILQ Nebula Library. Together they combine precise stereo manipulation with authentic analog transformer tone.

• SILQ WIDTH handles stereo width control and Mid/Side matrix processing.

• SILQ Nebula Library adds harmonic density, tone, air, and analog saturation.

• Because Nebula cannot natively perform internal M/S matrix processing, a separate high-quality plugin was developed specifically for this task.

Nebula Library

Four Sample Rates | Analog Transformer Character | Two Iconic Modes

SILQ captures the soul of a legendary transformer circuit — one that has shaped the sound of countless hit records across decades of professional recording. Engineered by one of the most celebrated minds in console and outboard history, this master bus circuit is revered for its smooth harmonic texture, its organic high-frequency air, and the way it makes everything passing through it feel alive.

Now that unmistakable character lives inside your DAW.

Sampled with surgical precision, SILQ delivers the full harmonic signature of this iconic circuit in four sample rates — 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz — ensuring pristine fidelity at every session standard. Load it into your Nebula instance and instantly add warmth, presence, and that elusive analog sound that mix engineers spend years chasing.

SILQ ships with two programs, each capturing a distinct mode of this iconic circuit.

BLEU — Targets the low and mid frequencies. Adds body, thickness, and density to your signal. The go-to choice for giving dry or thin-sounding mixes weight, substance, and foundation.

ROUGE — Targets the upper mids and highs. Adds sparkle, air, and harmonic brilliance. Perfect for bringing life, presence, and character to vocals, buses, and full mixes.

What SILQ brings to your mix:

Harmonically rich transformer saturation with natural frequency-dependent character.

Two programs (BLEU & ROUGE) covering the full spectrum — from low-end weight to high-end brilliance

• Four sample rates for universal session compatibility
• Zero-compromise analog character at any gain stage

Whether you're tracking vocals, processing buses, or putting the finishing touch on your master, SILQ rewards everything you run through it. Some circuits just have the sound — and SILQ puts it at your fingertips.

Up to 9 Harmonics!

The sampling process has been refined to be as transparent as possible and we deliver up to 9 Kernels/Harmonics (for Bleu, Rouge has 8) this time to get you as near as possible to the original sound.

System Requirements

PC: Nebula with installed commercial license

Mac: Nebula with installed commercial license 

Mac M-Series: choose the AU Version of N3 Addon of N4 it should work in nearly every DAW (else in Rosetta Mode) 

SILQ WIDTH Plugin is AU/VST3 Format.

Send Authorization Request for the SILQ Library only by sending your SER file to support(at)analoginthebox.com