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Purple Audio Action FET Compressor (Demo Deal) – No Longer Available

Discrete FET 500 Series compressor reminiscent of the Purple MC77

Product Description

The Purple Audio Action features a constant impedance 600 ohm input attenuator feeding the input transformer, just like our MC77 units. 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 our class A KDJ3 opamp, which feeds the output fader. Lastly, our class AB KDJ4 output opamp drives our custom hexafilar nickel and steel output transformer. The total gain (with no attenuation) is 45dB, just like the MC77.

The attack and release times cover a broader range than the MC77, which can cause distortion... which may or may not be what you are looking for. Use at extremes with caution. The ratios are the same as the MC77, and the threshhold moves up as the ratio goes up, just like the MC77.

In the center of the unit is an SMT sidechain and stereo link amplifier, below that is our SMT compression LED ladder meter driver. Behind that is the SMT input and output tricolor LED meter driver.

Stereo linking is accomplished by cross connecting pins 3 & 6 on the edge connector. On the Purple Sweet Ten, there is a second output XLR that can be used to link two Actions. The link is accomplished using a XLR-F to XLR-F cable with pin 2 on one XLR-F connecting to pin 3 on the other XLR-F and vice versa. Plug in the cable, flip the front panel switch and you are linked. Non-Purple racks do not have an easy way to connect pins 3 and 6, and will need modification to link two Action units.

The 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
Specifications:
  • Total Gain: 45dBu
  • Ratios: 4:1, 8:1, 12:1, 20:1, ∞:1 ("All buttons in")
  • Attack time: Continuously Variable from over 800 microseconds to 20 microseconds
  • Release time: Continuously Variable from over 1.1 seconds to 50 milliseconds
  • Input impedance: 600 ohms
  • Output impedance: 600 ohms
  • Current consumption: 90ma
  • Product Specifications

    Condition Demo / B-Stock
    Tube or Solid State Solid State
    Channels Single-Channel
    Chassis Module
    Module Type 500 Series
    Module Slot Count 1 Slot
    Digital I/O No

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    I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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    In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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    This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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