9.2Essential
FabFilter Pro-L 2 is a true peak limiter plug-in with multiple limiting algorithms and extensive loudness metering.
Plugin comparison
FabFilter Pro-L 2 vs Slate Digital Virtual Mix Rack
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
8.4Great
Slate Digital Virtual Mix Rack by Slate Digital: effect from Slate Digital. Price $15/mo or perpetual, Dubspot Score 8.4, specs and alternatives for 2026.
Score verdict
Which should you buy?
On the Dubspot Score, FabFilter Pro-L 2 comes out ahead (9.2). That said, the right pick depends on your workflow and budget — read both reviews before deciding.
Technical matrix
Specs compared
| Signal | FabFilter Pro-L 2 | Slate Digital Virtual Mix Rack |
|---|---|---|
| Price | $199.00 | $15/mo or perpetual |
| Dubspot Score | 9.2 | 8.4 |
| Formats | VST, VST3, Audio Units (AU), CLAP, AAX Native, AudioSuite | VST3, AU, AAX |
| Limiting algorithms | Eight different algorithms | — |
| Oversampling | Up to 32x linear-phase | — |
| Loudness metering standards | EBU R128, ITU-R BS.1770-4, ATSC A/85 | — |
| True peak limiting | Yes | — |
| Surround support | Up to Dolby Atmos 9.1.6 | — |
| Dithering | Advanced, with three noise shaping algorithms | — |
| Product type | — | effect from Slate Digital |
| Developer | — | Slate Digital |
| Typical price | — | $15/mo or perpetual |
| Formats | — | VST3, AU, AAX |
| Primary job | — | focused effect work in modern sessions |
| Catalog status | — | Current as of 2026 |
See the full plugin database for more comparisons.