The UA 175B and 176 Tube Compressor Collection faithfully recreates the classic compressors designed by audio pioneer Bill Putnam Sr. These compressors are renowned for their rich tube-driven gain reduction and dynamic control, delivering the same legendary warmth and character as the rare original hardware units. Built for studio recording and mixing since the early 1960s, the 175B and 176 provide fast attack times and independently adjustable attack and release settings, offering precise compression tailored to a variety of audio sources.

This plug-in brings vintage compression and harmonic saturation to vocals, drums, guitars, and synths, enhancing tracks with authentic tube amplifier and transformer coloration. Users can creatively shape dynamics using multiple ratio controls, from gentle 2:1 compression to aggressive 12:1 limiting. The inclusion of Dry/Wet Mix parallel processing and Headroom controls allows for seamless blending and optimal signal handling, making it easy to achieve polished, professional drum and vocal sounds.

Beyond compression, the UA 175B and 176 plug-ins offer the option to bypass gain reduction and function as tone-shaping tools that impart rich tube textures. Their unique feedback compression circuit enables smooth, musical gain control that softens at lower inputs and approaches brickwall limiting at higher levels. Ideal for adding depth to room mics, defining guitars, or anchoring bass in a mix, these compressors deliver unmistakable analog warmth and sonic depth that remain true to the original hardware in blind listening tests.