If it ain’t there, you can’t boost it... but you can add a little something!
Musik Hack’s SweetEQ uses several processes to fill out the sound — pretty much any sound, in fact — more than EQ boosts alone can do. It’s available for AU, VST3 and AAX plug‑in hosts and for macOS 10.15 onwards, and Windows 10 and higher.
Overview & Operation
The scalable GUI has the option of preset or custom colour schemes, and at the top are some common controls: input and output level knobs, a drop‑down menu for preset management, undo/redo buttons, a bypass toggle, and oversampling options. These are joined by a unity‑gain button (really useful since, at times, the controls can result in significant level increases) and a soft/hard output clip facility. A stylish spectral display beneath deliberately gives only a loose feel for the incoming signal and what you’re doing to it. Overlaid on this is a set of drag‑to‑adjust bracket filters (ie. one high‑pass, the other low‑pass) that let you shape the result — very handy for taming the top end, or spot telephone effects and so on.
The real business end is at the bottom, where you’ll find four vertical sliders (Low, Density, Lift and High) and a Mix knob that can be broken out to give separate control over the Mid and Sides. The Low band has a second Pitch slider, while the High band has a second one called Calm. With the mix fully wet, you use the four ‘faders’ like boost‑only EQ bands — just drag up for ‘more’. Pitch determines where the Low band energy boost is focused, and it’s easiest to tune with a chunky boost that you can then zero and raise to taste. I tended to use Calm to tame the desired boost. From a user point of view, other than juggling the soft/hard‑clip stage with the input and output levels that’s it: you just massage your sound into shape.
I gather that Musik Hack’s developers spent a lot of time and effort considering the best combination of processing for any given control setting, and the knobs and sliders aren’t simply macro controls — the control ballistics for each of the blended processes are carefully judged by ear. It shows. Subjectively speaking, these few controls offer a way to tackle thinness or brittleness in a sound, or make pretty much any source sound fuller, fatter: sweeter, in fact!
Low seems to be a combination of EQ and saturation. It can fill out the bottom end, or shift the energy in that area. It’s great for giving kicks and bass instruments a sense of power on smaller speakers (laptops, phones...). Density seems to thicken a broader range of frequencies, while Lift emphases the high‑mids and ‘low highs’. It sounds like maybe there’s multiband compression involved, and it’s probably the easiest control to overcook; I never ended up with this above 70 percent. Interestingly, it doesn’t seem to interact unhelpfully with boosts in other bands. High comes across largely as a lift of the air frequencies but can have an ‘edge’ that the Calm control can soften if desired.
SweetEQ’s handful of controls deliver the goods quickly and super‑intuitively.
Verdict
Yes, you can achieve something similar by combining traditional plug‑ins, but that would require a lot of ‘left brain work’ and take considerable time. Musik Hack’s care over the behaviour of the knobs and sliders really shows: operating this neat little plug‑in really is effortless. SweetEQ’s handful of controls deliver the goods quickly and super‑intuitively; I very quickly obtained pleasing results on a huge range of material, from individual kicks and snares, through vocals, guitars and loops, right up to complex stereo material. The effect can be radical reshaping or subtle sweetening. I often found as little as 5 percent on a slider was enough to do what I needed, but other times I opted to push some of them right up, before blending to taste. You might say, I’m smitten with SweetEQ. Highly recommended.
Summary
A wonderful plug‑in that combines EQ, saturation and multiband compression to thicken, sweeten and sculpt pretty much any sound with ease.
Information
$99 (discounted to $79 when going to press). Rent to buy $8.25 ($6.50) per month.
$99 (discounted to $79 when going to press). Rent to buy $8.25 ($6.50) per month.

