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Purple Audio Action - 500-Series 1176 Style Compressor

£780.00 £650.00 (ex. vat)




Purple Audio Action

  • Purple Audio Action
  • Purple Audio Action

Purple Audio Action - 500-Series 1176 Style Compressor

The Purple Audio Action is a 500-series compressor reminiscent of an 1176 limiting amplifier. Controls include input and output gain, attack, release and a five position ratio selector with 4:1, 8:1, 12:1, 20:1 and lastly ∞:1, which works the same way as pushing in all four ratio buttons on an 1176.

Many of the parts and features are taken from the Purple Audio MC77 which is based on revision E 1176 audio circuitry including a constant impedance 600 ohm input attenuator feeding the input transformer. This makes the input more resistant to overload by hot signals. After the input transformer, the signal is attenuated by the same gain reduction FET as in the MC77. The attenuated signal is buffered by a class A KDJ3 opamp, which feeds the output fader. Lastly, a class AB KDJ4 output opamp drives a custom hexafilar nickel and steel output transformer. The total gain (with no attenuation) is 45dB, just like the MC77.

The Action can be stereo linked by connecting pins 3 and 6 on the edge connector. If used within a Purple Audio Sweet Ten 500-Series chassis, a second 1/4" output can be used to link two modules. In other manufacturer chassis, there is no easy wa to link modules and modification will be needed.

Purple Audio Action Features

  • Input attenuator feeding input transformer
  • Output level control
  • Input and output tricolor LED metering
  • Eight LED GR metering
  • Five ratios including “All buttons in” mode
  • Attack and Release controls
  • True Relay Bypass
  • Stereo Linking
  • Compression on/off switch
  • Discrete signal path
  • Over Current Resettable Fused (prevents any module problem from affecting your rack)
  • ROHS – Lead Free

Purple Audio Action Specifications

  • Total Gain: 45dBu
  • Ratios: 4:1, 8:1, 12:1, 20:1, ∞:1 (All buttons in)
  • Attack time: Variable from 800 to 20 microseconds
  • Release time: Variable from 1.1 seconds to 50 mls
  • Input impedance: 600 ohms
  • Output impedance: 600 ohms
  • Current consumption: 90ma
Manufacturer Purple Audio
SKU SPURACTION500
Model Purple Audio Action
GTIN N/A
Purple Audio
Purple Audio
Purple Audio Action
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