Slate Digital Fresh Air 1.0.9 — Mac version

You've got a vocal take that's well recorded but sits a bit flat in the track. Pull up Fresh Air, nudge the Mid Air knob to bring the words forward, then dial in a touch of High Air to give it that expensive, open-back condenser sheen. No complex routing, just two controls that do what their names suggest.

The Mid Air control works on upper-mid frequencies, the range where a snare cracks through or a keyboard part finds its place. High Air reaches further up, adding a polite brightness to cymbals or an entire mix bus without making things brittle. There's also a Trim control to keep your output level sensible after you've added the gain, plus a Link button to move both Air knobs together when you want to lift the whole top end in one motion.

It sits happily on individual channels or across the master. Drums, keys, a whole drum buss — it's made to slot in wherever the recording needs a bit more air without reaching for a separate exciter and a shelf EQ to tame what the exciter does.

No iLok dongle needed to activate

People often ask whether Fresh Air needs an iLok dongle. It doesn't. The slate digital mac installer lets you activate via iLok Cloud, a physical iLok, or machine activation — so if you haven't got a dongle lying around, the cloud or machine route works fine.

Another common one: "Is this just a fancy EQ?" Not really. A static shelf boost lifts everything above a set point, noise and harshness included. Fresh Air reacts to the programme material — it pushes presence and air dynamically, meaning quiet passages get a lift while already-bright sections don't get overcooked. That's the difference between this and grabbing your channel EQ.

People also worry about CPU load with these dynamic processors. Fair question when you're running forty-odd tracks. We'll get to that, but the short answer is it's surprisingly light. You won't need to freeze every channel just to use it.

Both knobs past halfway makes the mix fizzy

The biggest one is cranking both knobs past halfway on the first try and wondering why the mix sounds fizzy. Fresh Air isn't a volume fader — small moves go a long way. Start with Mid Air around 10 o'clock and High Air closer to 9, then nudge up slowly while listening on monitors, not just headphones. Headphones can lie about brightness.

Another slip: ignoring the Trim control. Both Air circuits add gain, sometimes several decibels. Without trimming the output back, the track just sounds louder, and louder always tricks the ear into thinking it sounds better. Match the output level to the bypassed signal before you decide whether the processing actually helped.

Putting it on every single track is tempting, and plenty of people do it, but that turns a mix into a brightness war. Pick your spot — lead vocal, snare top, maybe the drum buss — and leave the supporting tracks alone. Otherwise everything fights for the same frequency shelf and nothing breathes.

Hear what the plugin does on a familiar vocal

Start on a single source you know well. A vocal you've mixed before is ideal — you'll notice what Fresh Air does differently compared to your usual EQ or exciter chain. Dial Mid Air until consonants pop forward without sibilance getting stabby, then ease in High Air until the tail of words opens up. Walk away for ten minutes and come back. If the vocal still sounds natural, you've found the sweet spot.

Try it on a drum buss with the Link button engaged. Linked knobs move both bands together, which works nicely for giving a kit some overall top-end lift without messing with the balance you've set. Unlinked, you can push more snap into the snare (Mid Air) while keeping cymbal wash controlled (High Air). Both approaches are useful; knowing when to use each takes a few sessions.

One trick that isn't obvious at first: use Fresh Air before a compressor on a dull acoustic guitar. The dynamic high-frequency lift feeds the compressor a brighter signal, and the compressor's gain reduction reacts to transients it wouldn't have caught otherwise. It reshapes the pick attack in a way that's different from EQ-ing after compression.

Runs across many tracks without the fan spinning up

Fresh Air opens quickly and doesn't bog down a session. On an Apple Silicon Mac it sits comfortably in the background, and you can run instances across multiple tracks without the fan spinning up. The interface draws in a fraction of a second — no lag when you insert it during playback, no beachball when you tweak a knob mid-mix.

Stability has been solid through the current version. No crashes or sudden silence when automating the Air controls, which matters if you're riding Mid Air into a chorus and back out again. Plugin scanning in your DAW picks it up cleanly, and recalling a session days later brings back settings exactly as you left them.

Resource use is modest for a dynamic processor. It's closer to a utility plugin than a heavyweight convolution reverb — you can run a dozen instances on a modest machine without thinking about it. If you're working on a large mix and need to squeeze more headroom, bouncing a few tracks with Fresh Air printed is quick, but you probably won't need to unless you're deep into triple-figure track counts.

One thing worth knowing: the fresh air mac build handles sample rates up to 192 kHz without fuss. Running a high-rate session didn't introduce clicks or timing drift, and the processing holds together the same way at 44.1 kHz as it does at 96 kHz. If you're working across sessions with different sample rates, Fresh Air adapts without needing a separate configuration step.

• macOS 11 or newer
• Apple Silicon Mac