Features

Exact reissue of API's original 525 from the early 70's

Peak detecting "feedback" compressor/limiter

Variable Threshold and Output levels

Unique "Ceiling" control combines key functions

Analog VU meter for monitoring gain reduction

4 Switchable release modes

De-Ess function

Traditional API fully discrete circuit design

Active Balanced Input/Output

Hardwire bypass

SpecificationsInput Impedance: > 30 K Ohms, Balanced
Output Impedance: 100 Ohms, Transformer coupled, Balanced
Operating Levels: -15 dBu to +20 dBu
Maximum Gain Reduction: 25 dB
Noise: 98 dB below +10 dBu output, at 10 dB of Compression
Harmonic Distortion: 0.5% Max, 30 to 20 kHz
Attack Time: 15 micro seconds
Release Times: .1, .5, 2.0, 2.5 seconds
De-essing: Inversion of the Voice Energy Curve
Slopes: Compression, 2:1, Limit, 20:1
Metering: Compression or Limiting-Illuminated Analog dB meter, shows Gain Reduction
Frequency Response: ±.5 dB, 30 to 20 kHz
Power Requirements: ±12/18 Volts/DC, @80 ma.
Size: 1.5" X 5.25" X 7.5" Deep
Size (Boxed for Shipping): 4.5" X 6.5" X 10"
Actual Weight: 1.77 lbs.
Shipping Weight: 2.17 lbs