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PreSonus ACP88 Eight Channel Compressor Limiter with Gate

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About the PreSonus ACP88

One of the all-time most popular products, the ACP88 delivers the classic analog compression that helped establish PreSonus as a leading signal-processor manufacturer. With eight independent, full-featured compressor/limiters and gates, the ACP88 can solve a host of thorny studio and live-sound problems.

Each channel provides a fully variable compressor with a sidechain send and return to enable spectral processing and ducking. In addition to the usual attack, release, ratio, threshold, and makeup gain controls, each compressor offers selectable soft- or hard-knee compression and an Auto Attack feature that overrides the manual controls and applies preset attack and release curves. A six-segment LED meter displays the amount of gain reduction.

The compressor/limiter is followed by a full-featured gate with attack, release, and threshold controls; a gate-range switch, which determines the amount of level reduction that occurs when the gate closes; and a sidechain/key insert loop that enables the gate to be opened, or "keyed," in response to a modified version of the program signal or some other external source.

PreSonus ACP88 Includes

  • PreSonus ACP88 Eight Channel Compressor Limiter Gate
  • Power Cable
  • PreSonus Warranty

PreSonus ACP88 Features

  • 8 independent channels, each with: Full-featured analog compressor/limiter
  • Attack, Release, Ratio, Threshold, and (makeup) Gain controls
  • Auto Attack button
  • Soft/hard knee switch
  • Sidechain send/return
  • 6-segment LED gain-reduction meter
  • Sidechain/key insert send/return
  • Attack, Release, and Threshold controls
  • Gate-range switch
  • Channel Link button (can link multiple channels)
  • +4 dBu/-10 dBV operating-level switch
  • 2U 19" rack-mountable, rugged steel chassis
  • Internal power supply with standard IEC connector

PreSonus ACP88 Specifications

Number of Channels Eight
Dynamic Range > 115dB
Signal to Noise Ratio > 95dB
Headroom +24dBu, Unbalanced, +8dBu, Balanced
Frequency Response 10Hz to 50kHz
Crosstalk < 82dB at 10kHz
Compression Threshold Range -40dBu to +20dBu
Compression Ratio 1:1 to 20:1
Compressor Attack Time 0.02ms to 200 ms
Compressor Release Time 0.5ms to 500ms
Auto Attack and Release Program Dependent
Gate Threshold Range -70dBu to +20dBu
Gate Attack Time 0.01ms to 100ms
Gate Release Time 0.02ms to 2 sec
Gate Attenuation Range -15dB or -60dB
Input Impedance 10k Ohms
Output Impedance 51 Ohms
THD + Noise < 0.02%
Output Gain -20dB to +20dB
Compression Curve Types Hard and Soft Knee
Compression Metering Above/Below Threshold LED
Gate Metering Open and Closed LED
Sidechain Output Impedance 51 Ohms
Sidechain Input Impedance 10k Ohms
Internal Operation Level +4dBu=0dBu
Input Range +4dBu or -10dBu
Input Connectors 1/4" TRS, Balanced or Unbalanced
Output Connectors 1/4" TRS, Balanced or Unbalanced
Compressor Sidechain Connector 1/4" TRS
Gate Sidechain Connector 1/4" TRS
Power Supply Internal, Linear Supply (factory configured)
Power Requirements 100V AC to 120V AC or 200V AC to 240V AC
Power Connection IEC Receptacle
Size 2U Rack
Dimensions 19" x 3.5" x 7" / 48.26 x 9 x 18 cm
Weight 12lbs / 5.44 kg
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