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GML 9500 – No Longer Available

Two-channel five-band parametric mastering EQ
MFR# 9500

Product Description

Brought to you by George Massenburg, the man who invented the very concept of Parametric Equalization, the GML 9500 Mastering Equalizer is the mastering-grade version of the industry-standard 8200.  For over twenty years engineers have relied on Massenburg equalization to create sonic perfection, and both the 8200 and the GML9500 can be found on virtually every major recording studio's racks.  stereo bus.

  • Industry-standard EQ found in most major studios worldwide
  • 1/2dB steps of Boost and Cut and 24 different frequency choices per band
  • 5-band dual-mono EQ with overlapping bands
  • Incredibly transparent and natural sounding

The choice of studios all over the world
Go into any major recording studio, anywhere on earth, and you'll probably find at least one GML9500 Mastering Equalizer across the mix outs.  It's that clear! George Massenburg, the inventor of parametric equalization, created the GML9500 for no-compromise audio environments in which the wrong master EQ could mean the difference between a Grammy and an also-ran.

Five bands, extraordinary control
Each of the GML9500's five bands offers 15dB of boost or cut and adjustable level control in 1/2dB increments.  You have ultimate flexibility with 24 selectable frequencies per band! The gain, frequency, and Q controls are fully detented for absolute precision and repeatability.  With uncommon front panel simplicity you can shape your signal a little or a lot!

An astonishingly clean, clear sound
Quite simply, the GML9500 is the archetype Mastering Equalizer.  Its extraordinary resolution, benchmark transparency, generous headroom, and surgical precision have been imitated by many other equalizers, but exceeded by no other.


  • All-discrete dual-mono mastering equalizer
  • Five-band stereo parametric equalizer with 1/2dB increments of boost or cut
  • 24 selectable frequencies per band
  • Fully detented controls for precision settings
  • Compact design in 3u rackmount case
  • Includes two 8355 power supplies

Product Specifications

Condition New
Tube or Solid State Solid State
Channels Dual-Channel
Chassis 19-inch Rack-mount
Rack Spaces 3u
Digital I/O No
EQ Type Parametric

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How do you rate this product?
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!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
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.
Martin C.
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.
Phil T.