Mr.Warmer

Install for free —macOS, Windows

Mr.Warmer plugin — saturation and musical frequency enhancement.

Introduction

Mr.Warmer is an audio plugin that "fattens" your mixes through saturation color and musical frequency enhancement. Designed for the final mastering stage, it offers Tilt EQ and Mid/Side mode.

Mr.Warmer

Installation

  1. Download MrAppManager from the INSTALLATION PAGE, or the installer with all three plugins if you'd rather not use the app.
  2. Open MrAppManager, go to Plugins and click Install on Mr.Warmer, or run the installer.
  3. Open your DAW and find Mr.Warmer in the plugin list (VST3 / AAX; AU on macOS).
  4. Insert Mr.Warmer on the desired channel's effects chain.

Interface

Mr.Warmer's interface is designed to be intuitive and straightforward.

Level: Controls the overall signal level of the saturator. As you increase this parameter, even and odd harmonics are gently applied to the signal, resulting in a natural and pleasing compression.

Color: Controls the weight and energy of the harmonics applied to the signal. Turn it up for a warmer, thicker sound.

Tilt: Adjusts the tonal balance of the signal before the saturator, tilting from warm lows to silky highs. Pre-saturator TILT EQ.

Mix: Blends between the original (dry) and processed (wet) signal. 100% = fully processed.

Mid / Side: Controls where saturation is applied using a percentage: 0% processes only Mid (center), 50% processes full stereo, and 100% processes only Side (laterals).

Color Boost: Adds a boost to the "Color" processing stage, applying more intermodulated harmonics between each other for a more powerful saturation. Ideal for creative processing where you want to push the character further.

In / Out: Adjusts the input level, applying more gain to add more energy to the saturation stage, and the output level if you want to compensate for the volume increase.

Oversampling: Increases the internal sample rate (x1, x2, x4 or x8) for higher quality harmonic processing and reduced aliasing.

Gain Unity: Automatically compensates the volume increase caused by saturation, so A/B bypass stays at equal loudness.

Bypass: Disables processing while keeping latency compensated for click-free A/B comparison.

Menu: Click the hamburger icon (top right) to open the menu: Theme (Classic / Dark) switches the UI palette; Resize (75 / 100 / 125%) scales the plugin window; Help opens Website, Support, About and License.

How Mr.Warmer saturates

Mr.Warmer is a tube stage: the same 12AX7 triode as Mr.Saturator's Tube, with a Tilt EQ in front and the Boost after it. It works in Mid/Side, with one triode for Mid and another for Side, and the M/S control decides how much of each reaches the output.

Tilt (before the tube)

An SVF filter splits the signal at 1 kHz and Tilt lifts one side while lowering the other, up to ±1.5 dB: 0% lifts the lows, 50% is flat and 100% lifts the highs. Since it sits before the triode it doesn't just change the tone: it decides which part of the spectrum drives the grid harder.

12AX7 triode

Physical model of a 12AX7 in a common-cathode stage, with its input and cathode capacitors. When the grid conducts, the operating point shifts (bias shift), so the saturation is asymmetric, with even and odd harmonics, and changes with the envelope. Level sets how much voltage reaches the grid and Color increases the drive.

Boost (lightning)

A second saturation stage after the triode that rounds off the waveform peaks and adds more harmonics. Its bias follows the envelope: the louder the signal, the more even harmonics, the second above all. Color sets its intensity.

Presets

Mr.Warmer includes factory presets ready to use. You can also save and load your own presets for quick access to your favorite settings.

System Requirements

  • Formats: VST3, AAX (64-bit) and AU (macOS only)
  • Platforms: macOS 10.13 or later on Intel and 11.0 or later on Apple Silicon, and Windows 10 (1607) or later (64-bit)
  • No iLok required
  • Works with all major DAWs, including Ableton Live, Logic Pro, GarageBand, FL Studio, Cubase, Studio One, Reason, Reaper, Bitwig Studio ...

Release notes

  • 1.2.5 · November 2026

    The interface shows the current values as soon as it opens.

  • 1.1.4 – 1.2.4 · October 2026

    Warm and Boost switch to tube (triode) processing, later revised. Input and output gains stay neutral in bypass. On-screen help, switched on from the menu. Interface size (75%, 100%, 125%), remembered between sessions; values show their unit; button hover tooltips removed; interface color adjustments. The support link opens the website in your language. Requires macOS 10.13 or later.

  • 1.0.0 – 1.1.3 · February – September 2026

    Development and test versions.