KIT Plugins BB F66/F67 — Free Download

Authentic Vintage Compression

The BB F66/F67 plugins capture the legendary sound of the Fairchild 660 compressor used in Martina McBride’s vocal chain at Blackbird Studio. They deliver the unmistakable warmth, richness, and smooth control that defined countless classic recordings, bringing that timeless analog character directly into your mixes.

Both plugins are built as true to the original hardware, preserving its unique response and musical behavior. Whether you need subtle glue or dramatic leveling, these models retain the authentic feel and nuance of the vintage unit, making them a reliable choice for engineers seeking high-quality analog emulation in a digital workflow.

Stereo Flexibility and Advanced Modes

The BB F67 variant extends the iconic 660 sound with added stereo and mid/side processing capabilities. It includes mode selection for Linked, Stereo, and Mid/Side operation, giving you the flexibility to handle complex stereo sources with the same classic character. Individual stereo controls allow precise adjustment of left and right channels or mid and side components.

This makes the BB F67 ideal for mastering-style duties, widening vocals, or treating entire mixes with a cohesive vintage tone. The ability to switch between modes expands creative possibilities, letting you apply the legendary compression either globally or in a more nuanced, frequency-specific manner, depending on the material.

Workflow and Hands-on Controls

KIT Plugins’ BB F66/F67 offers a practical interface featuring input gain, threshold, makeup gain, and time constants that set predetermined attack and release times. A mix control enables NYC-style parallel compression, blending the compressed signal with the dry one for punch and depth. Selectable VU metering for input, output, and gain reduction gives clear visual feedback.

External sidechain support and a frequency-driven sidechain detector circuit (with a variable high-pass filter) allow for dynamic response shaping based on external triggers. A/B selection lets you quickly compare two settings, and the fully resizable UI includes a preset management system with factory and collaborator presets from notable engineers. Undo/redo and an options menu for UI sizing round out the user experience.

Practical Applications and Integration

Designed for vocals, the BB F66 is perfect for adding warmth and leveling to lead or background tracks, while the BB F67’s stereo modes suit instruments like pianos, drum overheads, or full mix busses. The parallel mix control is useful for preserving transients while gaining density, a common approach in modern production.

You can use the external sidechain with a filtered signal to make the compressor react to specific frequencies, such as taming sibilance or shaping bass. The mid/side mode enhances width and control in mastering, ensuring a cohesive result. These plugins integrate smoothly into any DAW session as insert effects, providing a straightforward path to classic analog sound.

Key features

• Authentic model of Martina McBride’s original Fairchild 660 compressor
• Stereo mode with linked, stereo, and mid/side processing options (BB F67)
• External sidechain support with high-pass filter for frequency-dependent detection
• Input, threshold, makeup gain, time constants, and parallel mix controls
• Selectable VU metering and A/B comparison for quick setting evaluation
• Fully resizable UI with preset management and undo/redo

Best for

Best for producers and mix engineers seeking authentic vintage compression on vocals, stereo sources, and full mixes. The F67’s mid/side mode adds flexibility for mastering tasks, while the parallel mix control suits modern mixing workflows. Ideal for adding warm glue and classic character.