Product details
Every producer has heard it: that warm, glued-together sound on classic records, where the whole mix breathes as one. A huge part of that sound is variable-mu tube compression – and the most famous box that does it is the Fairchild 670. The problem is that classic Fairchild plugins copy the limitations too: six fixed time constants, awkward threshold behavior, a design that assumes 1950s console levels. The UnFairchild 670M mkII, from Eric Valentine’s UnderTone Audio, keeps the tube soul and rebuilds everything around it.
At AudioTools it is €59.99 instead of €149.00 – 60% off – with your own license key and a secure download link sent to your email.
Tube warmth that fits modern sessions
What makes the UnFairchild practical for today’s creators is the rebuilt control set. Four continuously variable time constants sit alongside the six originals, so you can dial the exact release your track needs instead of picking the least-wrong preset. The DC Threshold adjusts to modern signal levels. The detector switches between feed-back and feed-forward for different compression flavors. Mid/side operation lets you glue the center while leaving the sides open. And three software-only extras – makeup gain, wet/dry mix, THD adjustment – turn it into a parallel-processing instrument: blend crushed tube color under your dry mix without committing.
What’s inside the box
- Variable-mu tube compressor modeled on the rebuilt UnFairchild 670M II hardware
- 10 time constants total: six classics plus four continuously variable
- Adjustable DC Threshold, feed-back/feed-forward detector, mid/side, sidechain, true bypass
- Wet/dry mix for parallel compression, THD control for harmonic color
- VST3, AU, AAX – Mac & Windows
- Hassle-free setup with clear installation steps
official UnderTone Audio website
Where it shines in your productions
Try it on the mix bus first – gentle settings, slow-ish release, a dB or two of reduction – and listen to the track pull together. Then try it on vocals: the tube harmonics add presence without EQ, and the wet/dry mix lets you keep transients intact. Drums love the feed-forward mode for punch; bass loves mid mode for weight. At 60% off, it is the kind of plugin you reach for daily, and updates are provided whenever available.
Tech specs at a glance
- Formats: VST3, AU, AAX (64-bit) – Mac & Windows
- Mid/side operation, sidechain input, true bypass
- Internet needed for delivery and authorization
Why creators buy from AudioTools
AudioTools is built for creators who want great sounds without the runaround. You get hassle-free setup with clear installation steps, fast email delivery of your download link and license key, and friendly support if anything does not go smoothly. Deals like this 60% discount on the UnFairchild 670M mkII are exactly what the store is for – check the shop for more, or dig into the Mix & Master Plugins category for tools that finish your tracks.
Frequently asked questions
What do I actually get when I buy the UnFairchild 670M mkII here?
The complete plugin, your own license key, and a download link sent to your email – the same full product, at 60% off.
Is this good for beginners?
Yes – start with gentle mix-bus settings and let the wet/dry mix do the work. The plugin rewards subtlety.
Will it make my mixes louder?
It adds glue and harmonic richness; pair it with a limiter like StandardCLIP for loudness.
Does it work on Mac and Windows?
Yes – VST3, AU and AAX on both platforms.
How fast is delivery?
By email, typically within minutes of checkout.
Tube glue for the price of a pizza night. At 60% off, your mixes will thank you.
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