Item #1582051 Model #RS660Stepped

Chandler Limited RS660 Tube Compressor/Limiter Stepped I/O Standard


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A tube compressor/limiter based on the famed Fairchild 660 and EMI RS124.

The Chandler Limited RS660 tube compressor/limiter with stepped I/O builds upon the technological advancements that began with the historic EMI RS124 and Fairchild 660 compressors used at EMI's Abbey Road Studios during the 1960s, and distills them into a refined and elegant compression circuit. Rather than a reproduction of existing equipment, the RS660 compressor stands apart and represents a path forward in the recording engineering development department. Capable of taming an array of dynamic sources from sensitive vocals to explosive drums, the RS660 compressor and limiter is at home alongside the historic units from which it was hewn and adds to the modern engineer’s cache of analog signal processors.

Chandler Limited is the only company in the world authorized to develop, manufacture and market the "official equipment" of EMI/Abbey Road Studios. Chandler Limited and their associated logos are registered trademarks of Chandler Limited, Inc. Abbey Road Studios, EMI, TG, REDD and RS and their associated logos are trademarks of EMI (IP) Limited.
  • Type: Valve – 6386, 6CG7, 6AL5
  • # of channels: 1
  • Inputs: 1 XLR
  • Outputs: 1 XLR
  • Output Impedance: Selectable, 200/600 ohms
  • Input/Output Control: Stepped
  • Time Constant: 7 positions, stepped
  • Modes: THD, Comp, Limit
  • Stereo Link: Switchable, .25" jack
  • Rack spaces: 2U
  • Power: Internal


  • Based on the historic EMI RS124 and Fairchild 660 compressors used at EMI's Abbey Road Studios
  • Tame dynamic sources like sensitive vocals or explosive drums
  • Handmade, mono/linkable, stepped I/O and transformer balanced
  • Refined and elegant compression circuit