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API Audio 527A 500-Series Compressor/Limiter  From API

500-Series Compressor/Limiter with "Feedback"/"Feed Forward" Compression Control as well as a Soft/Hard Knee Selection Switch

API Audio

$1,135.25

Retail:  $1,195.00

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Manufacturer's Description from API

The API 527A Compressor/Limiter takes its place alongside the family of API VCA based compressors, including the 225L compressor and 529, 2500, and 2500+ stereo bus compressors. Anyone familiar with these units will immediately be at home with the 527A.

Features common to the line include “feed forward” (NEW) and “feed-back” (OLD) gain reduction methods selectable on the front panel, provide a choice of “that old way” or “the new way” of compression, for the highest level of flexibility in signal gain control. The “old way” or feed-back method is what most of the classic compressors used for the gain control circuit. The “new way” gain reduction is more typical of the newer VCA type compressors that rely on RMS detectors for the gain control voltage.

There is a “SOFT”/”HARD” knee switch for an “over-easy” type compression resulting in a very natural, uncompressed sound or a typical sharp knee type that lends itself to a much more severe limiting effect.

The patented THRUST ® function can be switched in and out via the front panel as well, applying a filter before the RMS detector circuit that preserves that punchy bottom end.

Two or more 527A Compressor/Limiters can be linked together via a DC link allowing multiple units to be combined for stereo and multichannel applications.

The output level remains fairly constant regardless of the threshold or ratio control, much like the “more/less” Ceiling control on the API 525 Compressor. This allows for live adjustments without any noticeable gain changes in the program level.

The 527A Compressor/Limiter makes use of the 2510 and 2520 discrete op-amps and exhibits the reliability, long life, and signature sound which are characteristic of API products.

API Audio

About Manufacturer

API (Automated Processes, Inc.) is world famous for its all-discrete audio products: studio and broadcast mixing consoles, and a full line of rack mount mic preamps, equalizers and processors. It all began with a dream. It was 1968. The company: Automated Processes Inc., formed by men with a vision. Best known for their now legendary "2520 amplifier", this unique amp has been and will continue to be the heart of all API discrete products. It continues to provide reliability and sonic purity unmatched by the competition. The resulting console met the needs of the music, commercial and broadcast industry. API became the leading audio broadcast console manufacturer for radio and television networks and high profile stations. In addition, recording studios, large and small, began using API.....and receiving rave reviews from engineers and producers. There are over 700 API consoles across the nation and around the world, including the three major networks. Over thirty years later, many of these consoles are still in daily use in some of the most prestigious recording and broadcast facilities in the world because, to date, there are few, if any consoles of equal sound quality at a cost-effective price.

Specifications

Connector: API 500 Edge Connector - VPR Alliance Compliant

Input Impedence: 120 K Ohms, Balanced

Output Impedence: 75 Ohms, Transformer coupled, Balanced

Maximum Input Level: +26 dBu

Maximum Output Level: +30 dBu

Output Fader Control Gain: -Infinity to +10 dB

Attack Times: 1 ms to 25 ms

Release Times: 0.3 seconds to 3 seconds

Compression Ratios: 1:1 to 1:Infinity

Threshold Control Range: +10 dBu to -20 dBu

Metering: 10 Segment LED Meter showing either Gain Reduction (-1 to -24 dB) or Output Level (14 to +14 dBu). Overload LED: +21 dBu

Frequency Response: +/- 0.5 dB 20 Hz to 40 kHz

Signal to Noise: 110 dB

Power Requirements: 3.5 Watts - VPR Alliance Compliant

Unit Size: 1.5" x 5.25" x 7" 

Shipping Size: 4.5" x 6.5" x 10"

Unit Weight:  1.8 lbs.

Shipping Weight: 2.2 lbs.