API 2500 Stereo Buss Compressor

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One of the finest compressors in the world - with patented Thrust control

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Manufacturer: API

Category: Recording & Playback

*Note that the price is based on when we previously had this product in stock. When placing an order for an item temporarily out of stock, in most cases the price will remain the same, however occasionally the price may be subject to change. If this is the case then we'll tell you straight away and offer a refund.



The API 2500 Stereo Bus Compressor allows adjustment of sonic qualities to alter the punch and tone of the stereo mix. One of the 2500's notable qualities is its use of API's patented THRUST circuit for a chest-hitting, punchy bottom end. The 19-inch, rack-mountable unit boasts a dual-channel design that can be configured for stereo compression or for use as two separate units via a single compression setting.

Another unique feature of the 2500 is its selectable "old" or "new" compression. The old style uses the "feed back" type of compression found in the API 525, while the new style uses a "feed forward" type in which the compressor side chain is fed directly from the unit input. Additionally, the output stage exhibits an auto-makeup gain button that permits the user to vary the threshold or ratio while automatically maintaining a constant output level. Further, the 2500 ensures fidelity with its all-discrete, fully balanced design with two front panel VU meters showing input, output and gain reduction levels.

  • API 2520 Op Amp
  • Variable threshold between -20dBu and +10dBu
  • Selectable ratio, attack and release times
  • Patented THRUST® selectable high-pass filter before RMS detector
  • Variable link between left and right channels
  • Old "feed back" or new "feed forward" compression
  • Soft, medium or hard knee for easy to sharp compression
  • Auto or manual gain make up
  • 1/4" balanced side chain inputs
  • Output clips at +28dBu

Additional Info

Additional Info

  • Power Consumption, Quiescent: 22.8 Watts
  • Size: 19" X 1.75" (1U) X 10.5" Deep
  • Size (Boxed for Shipping): 23.25" X 6.5" X 16"
  • Actual Weight: 9.48 lbs.
  • Shipping Weight: 13.38 lbs.
Manufacturer's Part Number 2500
Manufacturer API
also known as API 2500 Stereo Compressor, API 2500 Buss Compressor, API 2500 Compressor
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