Relab Color Drive
Saturation Plugin
The Drive That Feels Alive
Real analog behavior, solved in real time.
Color Drive is the Relab 176's variable-gain tube circuit, with transformers and all.
This is true hardware saturation in software form.
Saturation Built From a Real-Time Circuit
Color Drive doesn’t stack algorithms or approximate "warmth".
It solves the Relab 176 tube stage, with the input transformer, 6BC8 variable-gain tube, calibration bias, and output transformer, as a single, living circuit.
That's why it behaves like hardware: every move changes the way the whole system responds.
It's hardware logic, in software form.
Harmonics that feel alive, not static. Because the full circuit is solved in real time, density, tone, and transient shape interact exactly like they do in hardware.
Subtle or bold – always musical. From barely-there warmth to real tube crunch, it can tuck transients, add harmonic weight, and give instruments presence without pushing them forward in level.
If you've been waiting for a saturator that responds like real hardware, this is the one that finally does it.
Drive - The Heart of the Tube Stage
When you increase the Drive you're not just adding "more effect" - you're pushing an accurate 6BC8 tube (and switchable output transformer) model inside a complete analog circuit.
Harmonics build naturally, transients round in a controlled way, and the signal picks up that understated weight and glow you normally only get from real hardware.
Switch in the Transformer, Change the Harmonics
Switching to transformer coupling inserts the Relab 176's output transformer back into the signal path, completing the full analog chain.
With Calibration centered, the stage produces mostly odd-order harmonics, adding focus, punch, and that familiar hardware solidity to a mix.
Bias the Tube & Tune the Harmonics
Calibration adjusts the tube’s bias point, letting you introduce just the right amount of even-order harmonics when you need warmth or contour.
Especially when paired with the output transformer, it becomes a precise way to shape the harmonic mix.
You can create subtle, musical shifts that give you real control over how the color sits in a track.
Modern Controls Shape What the Circuit Hears
These controls let you decide how the signal enters the tube stage, not just how much.
The low-end crossover can route the deep bass around the drive circuit so you keep all the weight without muddying the harmonics.
And the pre/post tilt or high-shelf emphasis filters let you steer exactly which frequencies push the tube harder.
Together they give you precise, musical control over the harmonic profile before any Drive is added.
A Workspace Built for a Growing Harmonic Platform
Color Drive launches with the Relab 176 tube stage, but the architecture is ready for additional circuits as we release new hardware models.
Future "color pack" upgrades will be downloadable right into this system, giving you an expanding library of real circuits and tones, all inside one unified workflow.
System Requirements
- MacOS 12 Monterey and above
- Windows 10 and above (64-bit only)
- Intel, AMD, or Apple Silicon CPU
- 8GB RAM or more
- Free iLok account and iLok License Manager
- iLok Machine and iLok USB licensing methods are supported
- Includes 2 activations per license
Plugin Formats
AAX Native, AU, and VST3
