Warm Audio WA-1B Tube Optical Compressor

Warm Audio WA-1B

The Warm Audio WA-1B delivers the smooth, tube-driven opto compression sound of one of the most respected hardware compressors ever built. Known for its forgiving response and musical behavior, it has long been a staple for dynamic vocal performances, and this meticulous re-creation brings that character into modern studios without compromise.

With an identical control set to the original hardware, the WA-1B lets you dial in subtle leveling or more assertive compression while keeping sources natural and controlled. While it is especially loved on vocals, this compressor also shines on bass, guitars, keys, and any source that benefits from smooth, confident dynamics control.

As an authorized dealer, Pro Audio Reserve ensures you’re receiving a genuine Warm Audio processor backed by full manufacturer warranty and long-term support.

Smooth Tube-Optical Compression for Vocals and More

The WA-1B is prized for its ability to control highly dynamic sources without sounding heavy-handed. Its tube-opto design naturally smooths transients, making it a go-to choice for vocals that need consistency while retaining emotion and detail.

Whether you are tracking or mixing, this compressor adds a sense of polish that feels effortless, helping performances sit comfortably in the mix.

Familiar Controls with Musical Timing Options

The WA-1B features Threshold and Ratio controls that cover everything from gentle leveling to more pronounced compression. Attack and Release can be set to Fixed or Manual modes, allowing you to lean on the natural behavior of the optical element or dial in a more precise response.

A dual time-constant design gives you a smooth, musical release curve, while the onboard analog meter makes it easy to monitor input level, gain reduction, or output level at a glance.

Premium Components and True Analog Signal Path

Inside, the WA-1B features a handwired, true-to-spec 270-volt discrete analog signal path with through-hole components and custom-core Lundahl transformers. This design contributes to the depth and clarity that define the classic opto compressor sound.

Select JJ and Tung-Sol tubes and a high-precision optical element complete the circuit, with every unit hand-tested and inspected by Warm Audio technicians in Austin, Texas.

Key Highlights

• Tube optical compressor inspired by the classic Lydkraft-style design
• Forgiving, musical compression ideal for dynamic vocals
• Identical control set to the original hardware unit
• Fixed and Manual attack and release timing options
• Custom-core Lundahl transformers and premium tubes
• Hand-tested and inspected in Austin, Texas

If you’re building a high-end dynamics chain, explore more options in our Compressors & Limiters,

Warm Audio WA=1B Specifications

What’s in the Box