FATSO EL7X Overview

The EL7X FATSO is one of the most unique and sought-after tools in Empirical Labs' lineup — a digitally controlled analog processor that brings the sonic magic of vintage gear into the digital age. Designed to emulate the warmth, saturation, and compression of classic tube gear and analog tape, the FATSO gives engineers and musicians a powerful way to fatten up digital recordings without the bulk or cost of reel-to-reel machines.

This two-channel processor integrates transients and frequency content in a musical way, enhancing perceived loudness while maintaining precise control over peaks. It’s perfect for giving digital audio a more natural, analog-feeling vibe — smoothing out harsh edges, sweetening high frequencies, and adding rich harmonic content.

Analog Warmth Without the Tape Machine
Whether you're working in a high-end recording studio or a home DAW setup, the FATSO lets you dial in the saturation and character of analog tape and tube gear — without the maintenance or expense. It’s a dream tool for engineers tired of "cold" digital mixes, and even audiophiles will love how it brings warmth and ambiance back to CDs and digital playback systems.

NEW: The ELEVEN Compressor
The EL7X introduces ELEVEN — a brand-new compressor replacing the original GP Ratio mode. Modeled after the legendary UREI 1176LN set to 20:1 compression, ELEVEN features a slower attack and lightning-fast release. This combo preserves punchy transients while locking down dynamics with classic punch and presence.

Perfect for vocals, bass, acoustic guitars, pianos, drum rooms, and more — slam it hard for aggressive control or just tickle it for subtle glue.

Four Distinct Processing Sections
Harmonic Generation & Soft Clipping
Adds gentle saturation like vintage tubes or tape, taming peaks musically and enhancing harmonic richness.
High-Frequency Saturation (Warmth)
A unique dynamic low-pass filter that smooths out harsh highs when they stack up — think “tape tone” for the digital era.
Transformer & Tape Head Emulation
Emulates the subtle low-frequency harmonics and character of classic analog transformers and tape heads.
Classic Knee Compression
Sweet, musical leveling with that Empirical Labs punch. Perfect for individual tracks or glueing a mix together.

FATSO = Analog soul for digital systems. If you're chasing warmth, character, and depth without compromise, this is your secret weapon.