Warm Audio - Optical Tube Compressor - Gray
About this product
Create rich, warm tone with this silver Warm Audio tube compressor. The large-core Cinemag input and output transformers balance voltage to accommodate various tasks, including mixing and recording, while the pre-emphasis lets you control tones. This Warm Audio tube compressor utilizes ‘2A style circuits for smooth handling of vocals and instruments.
Features
Classic '2A optical compressor
Transformer balanced, high-voltage, opto-tube compressor utilizes premium-grade input and output CineMag USA transformers.
Kenetek opto-cell attenuator T4'-style module
Socketed to enable retrofitting with other opto-cells.
Fully discrete signal path
Comes with premium Tung-Sol and Electro-Harmonix tubes (two 12AX7, one 12BH7, one 6AQ5 or 6P1J).
Variable preemphasis
Allows for compression high-pass filtering (tone control).
Stereo-link capable
Connect two WA-2A units together, using a stereo-link input jack with one shielded TRS 1/4" patch cable.
Inputs/outputs
Offers XLR and TRS balanced line level inputs/outputs with 600 ohms impedance.
Specifications
- BrandWarm AudioModel NumberWA-2AProduct NameOptical Tube CompressorColorGrayProduct Width19 inchesProduct Height3.5 inches
Reviews
Rating 5 out of 5 stars with 1 review
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Compare similar products

Create rich, warm tone with this silver Warm Audio tube compressor. The large-core Cinemag input and output transformers balance voltage to accommodate various tasks, including mixing and recording, while the pre-emphasis lets you control tones. This Warm Audio tube compressor utilizes ‘2A style circuits for smooth handling of vocals and instruments.

Experience the silky-smooth tone and forgiving dynamics of one of the world’s most beloved compressors with the Warm Audio WA-1B Optical Compressor. Modeled after the legendary Lydkraft tube-opto design that has shaped countless iconic hip-hop and R&B vocals, the WA-1B combines vintage analog character with modern precision.Its fully discrete analog signal path and custom Lundahl transformers reproduce the warmth, punch, and musical response that made the original a studio favorite. The WA-1B’s switchable Fixed and Manual Attack/Release modes let you fine-tune your response for subtle vocal leveling, smooth acoustic compression, or hard-hitting drum control — all while maintaining pristine clarity.Inside, you’ll find premium components including JJ and Tung-Sol tubes, high-voltage 270V circuitry, and a high-precision optical element that reacts naturally to the incoming signal. Every unit is handwired and tested by Warm Audio’s engineers in Austin, TX, ensuring consistency and true-to-spec performance.Whether you’re recording vocals, bass, or full-band mixes, the Warm Audio WA-1B adds that unmistakable tube-opto magic — lush, analog compression that enhances your sound with warmth, depth, and professional-grade polish.

The SiX Desktop Mixer is an analog mixing console designed for recording, mixing, and production workflows within compact sound studio equipment setups. It provides integrated mic preamp channels with EQ and channel dynamics processing, along with a stereo bus compressor for managing full mix signal paths. The mixer supports connection of microphones, instruments, and external effects processors through flexible input and output routing, enabling coordinated signal flow for podcasting, music production, and streaming environments. Its compact desktop format supports integration with audio interface systems, monitoring equipment, and production setups used by producers, performers, and content creators working in studio, home, or mobile recording environments.

The Harrison 32Classic Channel Strip is a DAW plug-in that combines a four-band parametric EQ, high- and low-pass filters, transformer-based saturation, compressor, and gate/expander in a single interface. It offers tools for tonal adjustments, dynamic control, and noise management for vocals, instruments, and line-level sources. Adjustable filters, drive-controlled saturation, multi-mode compression with sidechain, and routing options allow users to customize signal flow and processing order, supporting a wide range of recording, tracking, and mixing workflows.
Specs
Be the first to ask a question.
We’ll try to get your question answered within 24 hours by a Best Buy customer or brand representative.


































































