The API 2500 is a versatile stereo bus compressor that allows adjustment of sonic qualities that can alter the punch and tone of the stereo mix. The 19" rack-mountable unit features API's patented "thrust" circuit for a chest-hitting, punchy bottom end. With its dual-channel design, the API 2500 is set up for stereo compression, but can also be used as two separate units via a single compression setting. The 2500 boasts a range of parameters that make it incredibly musical.
API pushes the envelope of flexibility further with selectable "old" or "new" compression. The old-style uses the feedback type of compression found in the API 525, Universal Audio 1176, and the Fairchild 660/670. The new style uses a feed-forward type, similar to other popular compressors.
The output stage features API's auto-makeup gain button, permitting the user to vary the threshold or ratio while automatically maintaining a constant output level. Fidelity is ensured with an all-discrete, fully balanced design, and two front panel VU meters show input, output, and gain reduction levels.
Features
- 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 "feedback" 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