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PreSonus

PreSonus FC-670 Compressor Fat Channel Plug-in [Online Code]

State-space modeled compressor plug-in faithfully recreates the smooth, warm character of a legendary 1950s hardware unit.

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Overview

The PreSonus FC-670 Compressor Fat Channel Plug-in is a meticulously modeled digital recreation of one of audio's most revered vintage compressor/limiters. Using state-space modeling — a technique that simulates the behavior of individual circuit components rather than just the overall frequency response — PreSonus has captured the smooth, program-dependent compression and harmonic warmth that made the original 1950s hardware a studio staple. The result is a plug-in that responds to audio dynamics with the same musical, forgiving character that producers and engineers have relied on for decades.

As a hybrid Fat Channel plug-in, the FC-670 operates in two environments: directly on PreSonus StudioLive Series III mixers for live sound and recording applications, and within Studio One's Fat Channel XT for studio mixing and mastering. This dual compatibility means you can apply the same processing in a live venue and later in your DAW session. The plug-in is delivered as an online product key, so there is no waiting for physical media. It is worth noting that this is exclusively a PreSonus ecosystem tool — it cannot be loaded as a VST, AU, or AAX plug-in in other DAWs.

Key Features

This product is an online product key sale. Delivery via your Amazon Games and Software Library

Hybrid Fat Channel plug-in works in both StudioLive Series III mixers and Studio One’s Fat Channel XT.

State-space modeled to precisely reproduce the sound and response of the original hardware.

Specifications

Brand
PreSonus
Model
FC-670 Compressor Fat Channel Plug-in
Type
Hybrid Fat Channel Plug-in
Modeling Technology
State-Space Modeled
Compatibility
StudioLive Series III Mixers, Studio One Fat Channel XT
Delivery
Online Product Key

Pros & Cons

👍 Pros

  • State-space modeling delivers highly accurate reproduction of the original hardware's sonic characteristics
  • Works both in live mixing on StudioLive Series III and in Studio One studio sessions
  • Instant digital delivery means you can be using it within minutes of purchase
  • Adds classic warm compression character without requiring expensive vintage hardware

👎 Cons

  • Only usable within the PreSonus ecosystem — not compatible with other DAWs or third-party plug-in formats
  • Requires ownership of a StudioLive Series III mixer or Studio One with Fat Channel XT
  • No trial version available to test before committing to the purchase
  • Limited to the single compressor model with no additional processing variations included

Frequently Asked Questions

The FC-670 works as a hybrid Fat Channel plug-in in both PreSonus StudioLive Series III mixers and Studio One's Fat Channel XT. It requires one of these platforms to operate.
This is an online product key — no physical media is shipped. The key is delivered through your Amazon Games and Software Library, and you redeem it through your PreSonus account.
PreSonus uses state-space modeling, which mathematically reproduces the behavior of individual circuit components in the original hardware, capturing its nonlinear response and harmonic character more accurately than conventional digital emulations.
No, the FC-670 is a Fat Channel plug-in, which means it only runs within the PreSonus Fat Channel environment — either on StudioLive Series III hardware or within Studio One's Fat Channel XT. It is not a standard VST/AU plug-in.

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