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Warm Audio WA-2A Tube Opto Compressor

WA-2A Style, Transformer Balanced, High-Voltage, OPTO Tube Compressor.


(2 reviews)


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Discounted Price $899.00
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Discounted Price $899.00
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Though digital technology and software have made great strides in recent years; Warm Audio still believe’s that nothing compares to the level of articulation, depth, realism, and responsiveness of a well-built piece of analog gear. When you hear the bottom-end presence and top-end detail of quality analog gear, the difference is astounding. The cost of most boutique analog equipment is financially out of reach for many recording artists. Warm Audio’s mission is to change this, and introduce as many people as they can to recording and mixing with real, dedicated hardware.

'2A Style Optical Compressor
No plug-in or other compressor type quite compares to the warm, forgiving, fluid qualities of the classic '2A optical compressor. For decades, the renowned ‘2A style circuit has become the go-to device for seamlessly handling vocals, bass, and a wide variety of other instruments and program material in an effortlessly smooth way. Releasing the WA-2A would be for nothing if we couldn’t make it affordable. Since the start of Warm Audio, has striven to give an unprecedented value to their customers, by putting high end audio within the reach of more people than ever before. This philosophy drives everything we do, and every product we offer.

Premium Components
The WA-2A is a high-voltage, Class-A opto-compressor, utilizing large-core CineMag USA Transformers, four premium vacuum tubes, and the legendary Kenetek opto-cell - considered by many to be the world’s finest.

A Four Tube Operation
The WA-2A operates on four tubes: two 12AX7’s, one 12BH7, and one 6aq5 (or 6P1J). We proudly use Tung-Sol and Electro-Harmonix brand tubes in the signal path, which sound very 'open' and LARGE. All 4 tubes are socketed for easy swapping and replacement.


  • 2A style, transformer balanced, high-voltage, OPTO tube compressor
  • Utilizes premium grade input and output Cinemag USA Transformers
  • USA made kenetek opto-cell attenuator T4' style module. Socketed to allow retro-fitting with their opto-cells
  • Premium Tung-Sol and Electro-Harmonix Tubes 2 x 12AX7, 1 x 12BH7, 1 x 6AQ5 OR 6P1.
  • Fully discrete signal path
  • Variable Pre-Emphasis, allows for compression hi-pass filtering (Tone Control)
  • Stereo-link Capable via TRS connector
  • Input impedance - 600 ohms, Bridges-T Control (Floating)
  • XLR and TRS balanced line level outputs - 600 ohms impedance
  • XLR and TRS balanced line level inputs - 600 ohms impedance
  • Frequency Response +/- 1 DB, 15 HZ TO 20KHZ.
  • Gain 40 DB ±1DB.
  • Input level +16 dB max
  • Output level +10 dB nominal, +16 dB max, distortion less than 0.1% THD at ±10 DBM.
  • Nosie = -74dB.
  • Attack Time - 10 Milliseconds
  • Release time - 0.06 seconds for 50% release - 0.5 TO 5 seconds for complete release
  • Meter displays both dB gain reduction and dB output
  • Power - 115/230 volts (Switchable), 50/60 HZ

Get your Warm Audio WA2A Optical Compressor today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Compressor

WA-2A just perform superbly!


Save some big money and go with the WA-2A! This Compressor just sounds and works incredibly! I use it mainly for Voice tracking and love the warm sound that it gives me. When compared to a plugin it just blows it away. The best part of all is that my clients love it !!



My go-to compressor


The Warm Audio WA-2A is one of my go-to compressors for vocals and acoustic guitar. It's warm and smooth character is unbeatable and adds a gorgeous depth and quality to my mixes. This is one of the best optical compressors on the market.




WA-2A Tube Opto Compressor

5.0 2


Number of Channels 1
Frequency Response 15Hz-20kHz
XLR Inputs 1 input
XLR Outputs 1 output
1/4" Outputs 1
Analog Inputs Number 1
Analog Outputs Number 1
Gain Range 0-100 dB
Compressor Yes
Side Chain I/O Yes
Phantom Power No
Dimensions 19" Rackmount Chasis, 2U. 19" x 7" x 3.5"
Series WA Series
Model WA2A
Information not available

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