Excellent condition, very little usage and always kept in a smoke-free home studio.

The API 527 compressor/limiter brings the same incredible character and response to your 500 Series rack found in their 2500 Stereo Bus Compressor. Featuring both API's newer "feed forward" and original "feed back" gain reduction methods, the 527 covers a wide range of tone - from classic warmth to modern precision. The 527 also offers you API's famous "over-easy" soft knee type, with the option of engaging a hard knee for limiting. A wide range of threshold, attack, and decay settings give you an extended degree of control over your compression, and the 527's detented attack and decay knobs make recalling your favorite settings easy and reliable. And since the API 527 uses both 2510 and 2520 discrete op-amps, it give you signature API sound.

Key features:

• Audio circuit uses the 2510 & 2520 Discrete Op Amps with transformer output
• Continuously variable detented Threshold control
• Continuously variable detented Attack & Release controls
• Continuously variable detented Ratio control
• Output Fader level control
• 10 segment VU/Gain Reduction meter with selector switch
• Overload LED
• "Link" switch for multiple unit interdependent compression linking
• "New"/"Old" switch for feed-forward or feed-back compression
• "Hard"/"Soft" compression curve knee switch
• Patented THRUST switch for frequency dependent side chain control
• "IN" switch with hard relay bypass when in the "Out" position