UnderTone Audio UnFairchild — Mac download

Mixing engineers who track through the hardware will find the plugin a practical recall partner.

Architecture — Native ARM and 64-bit x86 support.

macOS minimum — macOS 10.13 High Sierra.

Plugin formats — VST3, AU, AAX Native.

Bypass — True bypass that hard-disengages the circuit model.

Compression topology — Feed-Back and Feed-Front modes. Feed-Back delivers the softer, program-dependent grab of the original; Feed-Front gives you a tighter, more modern clamp.

DC Threshold — A user-adjustable control that shifts the compression knee relative to the signal’s DC offset, changing how asymmetrical waveforms hit the detector.

Mid-Side — Built-in MS routing, so you can fatten the centre without pumping the sides, or shave transients from the side channel only.

Saturation — An overall THD control adds weight with a single slider, from a clean 1 dB to a fuzzier 5% total harmonic distortion. Useful on drums for body and on vocals for forward density without a second plug-in.

Fits With Your Other Tools

UnFairchild slots into a chain the way the hardware does: after corrective EQ, before or after a clean digital limiter depending on the job. On a drum bus, run it before a bus compressor like an SSL-style VCA and it adds glue without flattening the transients. On a vocal, place it after de-essing and before a final peak limiter. The wet/dry control means you can print parallel compression without setting up aux sends in the DAW.

macOS features play along quietly. The plugin respects system audio routing, so it works inside Aggregate Devices for monitoring, and it reports latency correctly to Core Audio. On Apple Silicon, it runs natively without a Rosetta prompt. If you use Logic’s selection-based processing, the true bypass keeps offline renders predictable.

Formats — VST3, AU, AAX Native cover every major Mac DAW. No separate installer for Intel and ARM; one package handles both.

One Instance Per Bus Stays Light on Any Recent Mac

Does it eat CPU? It is a circuit model, not a sample pack. One instance per bus is comfortable on any Mac from the last five years. Ten instances across a heavy mix will ask for buffer headroom, but that is also true of the mkII hardware’s power draw in a rack.

Can it replace the hardware? For recall and parallel work, yes. For the last half-percent of transformer colour at extreme gain reduction, the hardware still wins. That is not a criticism; it is the difference between a photo of a room and standing in it.

Is the MS mode true mid-side? Yes. The routing splits before the detector, so compression decisions happen in the encoded domain. You hear the result after decoding.

One more note for people searching for the undertone torrent or the undertone 2025 torrent: the plugin ships as a standard package with installation instructions included. No extra utilities, no wrapper apps.

Drum Bus Workflow

A usable chain in any DAW:

1. Group all drum tracks to a bus. Insert UnFairchild in the first slot.
2. Set topology to Feed-Back. Pick time constant 2 for a medium grab.
3. Pull the threshold down until the needle (or meter) moves 3–4 dB on the loudest fill.
4. Blend wet/dry to 70% wet. The dry 30% keeps the kick transient honest.
5. Add THD to 1.5% for low-mid weight on toms and snare body.
6. If the cymbals pump, engage MS and lower the side channel gain by 0.5 dB before the detector.
7. Print the bus. Compare with true bypass engaged once, then move on.

The same layout works for a vocal with the topology switched to Feed-Front and time constant 1. The unfairchild plugin rewards listening more than preset hopping.

• macOS 10.13 or later
• ARM or 64-bit Intel processor
• VST3, AU, or AAX-compatible host