9.3Essential
FabFilter Pro-Q 4 is an equalizer plug-in with up to 24 bands, dynamic EQ, spectral dynamics, and linear/natural/zero-latency phase modes.
Plugin comparison
FabFilter Pro-Q 4 vs TDR VOS SlickEQ
Specs, price and the Dubspot Score, side by side — with our verdict on which effect to buy.
Independent score / workflow fit / buying signal
Contenders
The side-by-side
8.6Great
TDR VOS SlickEQ is a free musical semi-parametric EQ from Tokyo Dawn Labs and Variety of Sound, with four EQ models and subtle output saturation stages.
Score verdict
Which should you buy?
On the Dubspot Score, FabFilter Pro-Q 4 comes out ahead (9.3). That said, the right pick depends on your workflow and budget — read both reviews before deciding.
Technical matrix
Specs compared
| Signal | FabFilter Pro-Q 4 | TDR VOS SlickEQ |
|---|---|---|
| Price | $199 | Free |
| Dubspot Score | 9.3 | 8.6 |
| Formats | VST, VST3, AU, CLAP, AAX Native, AudioSuite | VST3, VST2, AU, AAX |
| EQ bands | Up to 24 bands | — |
| Filter shapes | Bell, Notch, High/Low Shelf, High/Low Cut, Band Pass, Tilt Shelf, Flat Tilt, All Pass | — |
| Filter slope | Up to 96 dB/octave, plus Brickwall option for LP/HP | — |
| Processing modes | Zero latency, Natural Phase, Linear Phase, plus Gentle/Warm character modes | — |
| Dynamic processing | Dynamic EQ and spectral dynamics with adjustable attack/release | — |
| Channel modes | Mid/side and left/right; surround up to Dolby Atmos 9.1.6 | — |
| Type | — | Semi-parametric mixing / mastering EQ |
| Price | — | Free |
| EQ models | — | American, British, German, Soviet |
| Bands | — | Low / Mid / High + 18 dB/oct high-pass |
| Formats | — | VST2, VST3, AU, AAX (64-bit primary) |
| Platforms | — | Windows 7+; macOS 10.9+ |
| Collaboration | — | Variety of Sound + Tokyo Dawn Labs |
| Manual | — | https://docs.tokyodawn.net/slickeq-manual/ |
See the full plugin database for more comparisons.