Color Drive by Relab Development saturation plugin interface

Color Drive: Tube Saturation Plugin by Relab Development

Rated 4.8/5 on Plugin Boutique (10 ratings)

Color Drive is a saturation plugin by Relab Development that models the Relab 176 tube circuit, including its 6BC8 variable-gain tube and output transformer, for adding harmonic color to audio.

VST3AUAAXWindowsmacOS64-bit

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01Overview

Color Drive is an effects plugin from Relab Development in the saturation category. It is built around the Relab 176 tube stage, modeling its variable-gain tube circuit along with a switchable output transformer. The developer describes the processing as a single circuit solved in real time, so changing one control affects how the rest of the chain responds. The result is harmonic coloration that aims to match the feel of hardware rather than a generic distortion effect.

Best for

Mix bus warmth
Drum saturation
Bass harmonic weight
Vocal color
Transient rounding
Tube-style coloration

Developer: Relab Development
Category: Saturation
Store: Plugin Boutique

02Key features

What you get

Models the Relab 176 tube stage with a 6BC8 variable-gain tube
Switchable output transformer completes the modeled analog chain
Calibration control adjusts tube bias and even-order harmonics
Mostly odd-order harmonics when Calibration is centered
Low-end crossover routes bass around the drive circuit
Pre and post tilt or high-shelf filters steer tube drive
Available in VST3, AU and AAX formats
Supports 64-bit operation on Windows and macOS

03In depth

Tube Saturation and Harmonic Character

Raising the Drive control pushes the signal through the modeled 6BC8 tube and its surrounding analog circuit. Harmonics build as the drive increases, and transients are rounded in a controlled way, which adds weight and warmth to a track.

Switching to transformer coupling inserts the output transformer into the signal path. With Calibration centered, the stage produces mostly odd-order harmonics, which tend to add focus and punch. Calibration adjusts the tube bias point, so you can introduce even-order harmonics when you want more warmth or contour.

Input Controls for Shaping the Drive

Color Drive includes controls that determine what reaches the tube stage. A low-end crossover can route deep bass around the drive circuit, keeping low-frequency weight without adding harmonic muddiness.

Pre and post tilt or high-shelf emphasis filters let you choose which frequencies drive the tube harder. These controls shape the harmonic profile before any Drive is applied.

04Specs

Will it run?

Formats, systems and requirements as listed by Plugin Boutique. Missing details are left out, not guessed.

Developer	Relab Development
Type	Plugin
Category	Saturation
Formats	VST3, AU, AAX
Operating systems	Windows, macOS
Architecture	64-bit

05FAQ

Questions, answered

What formats does Color Drive support?

Color Drive is available in VST3, AU and AAX formats, all 64-bit. It runs on Windows and macOS.

What do I need to run Color Drive?

On macOS you need macOS 12 Monterey or higher and an Apple Silicon M1 or newer processor. On Windows you need Windows 10 or later and an Intel Core i7 (8th-gen+) or AMD Ryzen 5 (3000-series+) with AVX2 support. Both platforms need 8 GB RAM minimum, 16 GB or more recommended, and an iLok account, with a dongle optional. Supported hosts include Pro Tools, Cubase, Nuendo, Ableton Live and Reaper.

What does the Calibration control do?

Calibration adjusts the tube's bias point. With it centered, the stage produces mostly odd-order harmonics. Moving it lets you add even-order harmonics for more warmth or contour.