Dynamics on every knob
Give BOOST and ATTEN a range and they turn by themselves as the band rises past the threshold — or falls under it — fully 12 dB past it, with a 3 dB soft knee.
Products
FrozenArt · Equalizer Coming soon
Dynamic EQ
+ Tube saturator and exciter
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- Formats
- AU
- Platform
- macOS
- Licence
- 3 Macs, offline activation
LOW FREQUENCY: choose the frequency, then BOOST and ATTEN — both at once give the classic low end, a big bottom with a dip just above it. HIGH FREQUENCY: a boost as wide as BANDWIDTH, and a gentle shelf cut. The knobs read 0 to 10, as on the hardware.
Then let a section follow the music. Switch its DYNAMICS on and give its knobs a range: when the band rises past the threshold they turn by that range, as fast as ATTACK, and come back as fast as RELEASE — like a hand on the knobs. An air boost that backs off on sibilance; a kick that stays tight because its loudest hits get less bottom.
An EQP-1A that listens
The two halves work as on the hardware. Then each can move by itself with the music, a tube can warm it, and two exciters can lift what is quiet.
Side chain
Let another track drive the dynamics: choose the kick in Logic’s Side Chain menu, and a bass’s low boost steps aside on every kick.
Tube DRIVE
A tube preamp after the EQ, learned from the UADx 610-B: low settings warm with the second harmonic, 10 is the 610-B at unity. The level is compensated.
Two exciters
Learned from the UADx A-Type: they lift a band’s quiet detail — breaths, consonant tails — and bring its loud parts down a little. SAT adds harmonics from the 610-B’s tube.
Low latency or linear phase
LOW LATENCY costs 5–6 samples. LINEAR matches the UADx’s phase within 0.1°, at about 1 ms, which Logic compensates.
Watch it work
The curve as set, and the curve right now
The screen shows the curve as set in ice, the curve right now in amber, and a haze for how far the dynamics can take it. Around each knob, the amber arc is its range and the lamp on it is where the knob stands right now.
The two needle meters show what each section hears, its threshold (the red index — drag it along the scale) and where the dynamics act. Drag a marker on the screen up or down to turn its knob, sideways to change its frequency.
Specifications
- Format
- Audio Unit effect (AUv3) with a side chain, for Logic Pro
- Low frequency
- 20, 30, 60 or 100 Hz · BOOST and ATTEN 0–10
- High frequency
- Boost at 3–16 kHz with BANDWIDTH · shelf cut at 5, 10 or 20 kHz
- Dynamics
- Per section: THRESH, BOOST ±, ATTEN ±, ATTACK, RELEASE, above or below
- Detectors
- This track or the side chain · linked or dual
- Colour
- Tube and transformer (on or clean) · DRIVE 0–10 · low and high exciters
- Oversampling
- 4× (2× at 88.2 and 96 kHz)
- Latency
- 5–6 samples (LOW LATENCY) · 46 samples at 48 kHz (LINEAR)
- Presets
- 16, among them Classic Low End, Vocal: Smooth Air and Mix Bus: Pultec + A-Type
Questions
How close is it to the UADx Pultec?
Measured the same way, the curves differ by 0.01–0.07 dB RMS and the harmonics by about 1 dB. A few things differ on purpose: the output knob is in dB with no OFF, and the UADx’s faint harmonic floor and grit are not copied.
Does it work outside Logic Pro?
It is an Audio Unit (AUv3), so it runs in Logic Pro and in hosts that load AUv3 effects. There is no VST3 version yet.
What does BELOW do?
It turns the knobs when the band falls under the threshold instead of rising past it — for example more air on a master only while it is quiet.
Inside Dynamic EQ
Pultec, EQP-1A, UADx, 610-B, A-Type, FabFilter, Pro-Q and Waves are trademarks of their owners. They are named only to say what this plug-in was measured against; FrozenArt is not affiliated with or endorsed by them.
System requirements
- macOS 14 or later
- A Mac with Apple silicon
- Logic Pro, or another host that loads Audio Unit (AUv3) effects
