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GML 9500

The 9500 Stereo Dynamic Gain Controller is a laboratory-level precision mastering tool. For serious professionals who demand the ultimate in transparency, the all-discrete 9500 delivers true reference-quality dynamic control. What else would you expect from the genius of George Massenburg?

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The 9500 is the Mastering Version of the 8200. The Gain, Frequency, and Q controls are fully-detented for absolute precision and repeatability. With 1/2dB steps of Boost and Cut and 24 different frequency choices per band, the 9500 is a powerful and comprehensive workhorse for Mastering Engineers around the world. This dual-mono, 3U “King of All Equalizers” requires two 8355 power supplies.

Features:

  • All-discrete dual-mono mastering equalizer
  • 5-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

Specifications:

  • Input:
    20 kΩ balanced bridging
    dB common mode rejection at 1 kHz
    26.4 dBv maximum input before clipping
  • Bandwidth:
    0.1 dB down at <10 Hz and 38 kHz
    1dB down at 150 kHz
  • Accurary:
    ±0.10 dB 13 Hz to 26 kHz (gain multiplier switch in X1 position)
    ±0.15 dB 13 Hz to 26 kHz (gain multiplier switch in X2 position)
    6% maximum frequency error
  • Harmonic Distrotion:
    0.001% typical at 20 dBv with EQ out
    0.0015% typical 22 Hz to 22 kHz with EQ in
    0.006% typical at 20 dBv with all bands switched in
  • Intermodular Distrotion:
    0.00100% typical at 20 dBv with EQ out
    0.00100% typical at 20 dBv with EQ in
    0.00450% typical at 20 dBc with all bands switched in
  • Noise:
    -100 dBv typical with EQ out
    -96 dBv typical with EQ in
    -85 dBv typical with all bands switched in
  • Crosstalk between left and right channels:
    -95 dB typical 22 Hz to 22 kHz at 20 dBv with EQ out
    -90 dB typical 22 Hz to 22 kHz at 20 dBv with EQ in
    -85 dB typical 22 Hz to 22 kHz at 20 dBv input with all bands switched in
  • Output:
    26.4 dBv headroom to clipping
    500Ω load, single ended,
    <±2.0 mv DC output offset, stablilzed by precision DV servos throughout (no electrolytic coupling capacitors)