Warm Audio WA-2A Optical Compressor

£899.00 (including VAT @ 20%)

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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

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Product Ref: 68611

  • New '2A Style, All Tube Optical Compressor.
  • CineMag Transformers
  • Tung-Sol & Electro-Harmonix Tubes
  • Kenetek T4B Opto Attenuator
  • Stereo Linkable

Warm Audio WA-2A Optical Compressor

The Warm Audio WA-2A Optical Compressor features a fully-discrete signal path with Cinemag transformer and premium-quality Tung-Sol and Electro-Harmonix tubes. This '2A style opto tube compressor delivers classic character with improved functionality, resulting in a warm yet smooth sound. Perfect for handling a range of signal from vocal takes to bass and more. The WA-2A's design is based on the iconic LA-2A Leveling Amplifier, conveniently housed in a 2U chassis.

Product Ref: 68611

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Buy on finance from £24.68 per month Finance from £24.68 per month  

  • 15.9%
  • £31.26
  • £1,125.36
Pay by Finance

To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 48, 36 or 24 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!

Representative Example

To help you understand how our finance options work, the examples below are based on a total order value of £250:

Finance APR Deposit to Pay Payments Total Payable
Classic Credit 48 Months 14.9% 14.9% No Deposit 48 months: £6.83
Final payment: £6.83
No settlement fee
Classic Credit 36 Months 15.9% 15.9% No Deposit 36 months: £8.65
Final payment: £8.65
No settlement fee
Classic Credit 24 Months 18.9% 18.9% No Deposit 24 months: £12.41
Final payment: £12.41
No settlement fee

How to Apply

Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal, then select Pay by Finance on the payment page, then click the orange APPLY FOR INSTANT FINANCE button. This will start your application with V12 Retail Finance, our finance partner, and completing this form should take approximately 10 minutes.

You should get an instant answer on whether your application has been successful, though in some rare cases V12 may need to look at the application in more detail.

Please note: This is only available on orders placed via the website and is not available in store or via phone currently.

Full Description

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Inspired By The LA-2A Leveling Amplifier

The Warm Audio WA-2A Optical Compressor's design is based on the distinguished LA-2A Leveling Amplifier, incorporating its classic four-tube design resulting in a warm yet smooth output. The four-tube design features four premium vacuum tubes as well as the renowned Kenetek opto-cell. The Kenetek Opto-Cell features custom-built EL panels designed to replicate the performance of the original LA-2A unit, resulting in a warm yet articulate sound.

High-End Compression

The need for a quality compressor in a studio setting is paramount, allowing you to take dull vocal takes or uninspired bass tones and turn them into something special. The complete discrete all-tube signal path features US-Made Cinemag input and output transformers as well a custom opto-cell from Kenetek. These premium-quality components result in the fluid and warm sonic qualities, the WA-2A Optical Compressor produces. Need that Lead Vocal take to sit well within the mix and not have to fight for space with other frequencies? Simply adjust your settings to accommodate your vocals and the WA-2A will deliver. The WA-2A Optical Compressor is perfect for a range of inputs from vocal to basslines and more, making the compressor highly versatile and ideal for a range of applications. The compressor itself features a range of controls including Limit/Compression, Peak Reduction, Gain Reduction and Output Gain controls.wide frequency range (15 Hz - 20kHz) also adds to its impressive arsenal of features, ensuring you capture every nuance of the original signal.


In addition to its wide range of quality components, the WA-2A Optical Compressor also features a select group of inputs and outputs for connecting external devices directly to the unit. Both XLR and TRS balanced line level inputs and outputs have been included allowing you to connect a range of outboard gear including audio interfaces. Additionally. you can connect 2 WA-2A Optical Compressor units together using the Stereo Link Input Jack. Once connected you can use the 'Stereo Link' function to operate the two units in stereo mode, with a shared threshold and sidechain response, perfect for stereo instrument recording.


  • Design based on the classic LA-2A Leveling Amplifier
  • Conveniently housed in a 2U chassis for studio use
  • Fully discrete signal path
  • Premium-grade Cinemag USA Transformers
  • Kenetek opto attenuator
  • Wide frequency range (15 Hz to 20kHz)
  • Stereo-link capability
  • Variable Pre-emphasis, allows for compression hipass filtering
  • Socketed to allow for retro-fitting with other opto-cells
  • XLR and TRS balanced line level inputs and outputs


  • Line Level, Transformer Balanced Input: 600 ohms impedance pin 2/tip=positive, pin 3/ring=negative, pin 1/sleeve=ground
  • Line Level, Transformer Balanced Output: 600 ohms impedance pin 2/tip=positive, pin 3/ring=negative, pin 1/sleeve=ground
  • Frequency Response: +/- 1 DB, 15 HZ TO 20KHZ
  • Maximum Gain: +40 dB ±1dB
  • Maximum Peak Reduction: -40 dB ±3dB
  • Input Level: +16 dB maximum
  • Output Level: +10 dB nominal, +16 dB maximum
  • Distortion: Less than 0.1% THD at ±10 dBm
  • Noise: -74dB
  • Attack Time: 10 milliseconds
  • Release Time: 0.06 seconds for 50% release; 0.5 to 5 seconds for complete release
  • Tube Compliment: 2x 12AX7, 1x 12BH7, 1x 6P1 (compatible with 6aQ5, 6005, and 6N1N)
  • Optical Attenuator: Kenetek T4B module (socketed) (compatible with T4A, T4B, and T4C modules per standard wiring configuration to standard octal header
  • Power: 115/230 volts (switchable), 50/60 Hz, standard IEC 3 conductor cord
  • Fuse Compliment: 1x 250v, 1amp fast-blow type fuse
  • Dimensions: 19” Rackmount chassis, 2U. 19” x 7” x 3.5”
  • Weight: 12 lbs

For additional information on the Warm Audio WA-2A Optical Compressor please refer to the PDF above.