Add a Legendary Limiter to your Studio
Introduced in the early 1960s — and used on thousands of seminal records — the UA 175B and 176 were the first compressors purpose-built for studio recording and mixing music, giving engineers groundbreaking fast attack time and independently variable Attack and Release controls.
Experience Deep Tube Sonics
Based on a pair of UA’s 1960s golden units, the UA 175B and 176 Tube Compressor Collection gives you all the ultra-musical harmonics and colorful saturation of these original units — down to their magical feedback compression circuit — giving you softer compression at lower input levels and harder, nearly brickwall limiting at higher levels.
Get the Rich Sound of an All-Around Champ
Perfect for vocals, drums, guitars, and more, the UA 175B and 176 plug-ins give you all the character and juice of the originals — indistinguishable from the target hardware in blind listening tests. Easily add depth to room mics or a drum bus, give your guitars definition, park a bass in a mix, and inject vocals with energy. You can even turn off the compression and use the 175B/176 plug-ins as a “tone box,” lending rich tube textures galore.
Key Benefits
- Add vintage compression and detail to vocals, drums, guitars, and more with one of Bill Putnam Sr.’s most coveted designs
- Spice up synths with harmonically rich tube amplifier and transformer saturation
- Creatively enhance the dynamics of your most important sources with 2:1, 4:1, 8:1 and 12:1 ratio controls
- Harness plug-in-only features like Dry/Wet Mix parallel processing and Headroom for user‑customizable operating level
- Use with any audio interface, no UA hardware required


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