Plugin comparison
Specs, price and the Dubspot Score, side by side — with our verdict on which effect to buy.
Independent score / workflow fit / buying signal
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Contenders
Kazrog Vac Rac TSL: official Inward Connections tube optical compressor with four voicings, 2:1 to 12:1 ratios, THD drive and M/S. $49.99 intro from $79.99.
UAD Teletronix LA-2A Leveler Collection includes Silver, Gray, and LA-2 optical compressor models for smooth leveling on vocals, bass, and more.
Technical matrix
| Signal | Kazrog Vac Rac TSL | UAD Teletronix LA-2A Leveler Collection |
|---|---|---|
| Price | $49.99 intro (regular $79.99) | $49+ |
| Dubspot Score | — | 8.8 |
| Formats | VST, VST3, AU, AAX, LV2, macOS, Windows, Linux | VST3, AU, AAX |
| Type | Two-channel tube optical compressor/limiter | Optical tube leveling amplifier / compressor |
| Units modelled | TSL-5, TSL-4 (Devin Powers), TSL-3 (Ross Hogarth), TLM-1 path (JJ Blair) | — |
| Ratio and reduction | 2:1 to 12:1, up to 40 dB per channel | — |
| Modes | Dual mono, stereo link, mid/side | — |
| Sidechain | High-pass 10 Hz to 250 Hz, low-pass | — |
| Oversampling | Up to 64x real time, 256x offline | — |
| Formats | Mac: VST, AU, AAX (Universal Binary). Windows: VST, AAX. Linux: VST3, VST2, LV2 | — |
| Systems | macOS 10.13 or later; Windows 10 or later recommended | — |
| Licence | Perpetual, multiple devices, no iLok | — |
| Models | — | LA-2A Silver, LA-2A Gray, LA-2 |
| Classic uses | — | Vocals, bass, drums, acoustic sources |
| Platform | — | Native macOS/Windows; Apollo realtime tracking supported |
| Authorization | — | iLok account |
| Trial | — | 14-day demos available on eligible UAD native plugins |
See the full plugin database for more comparisons.