The 9530 Tube Vitalizer for mastering from SPL is a multi-capable audio processing unit that, with its combination of tube, coil and transistor circuitry, can be used for mixing, mastering and restoration of sound. The Vitalizer offers more than simply equalization. It includes additional processing circuitry to maximize efficiency, and is designed to be simple to use as well, both in single-channel and subgroup processing. It is also a capable unit used in refining summing signals.

The Tube Vitalizer is designed for discerning applications in professional recording, mastering and cutting. All effect intensities and potentiometer values and characteristics are optimized for the refined requirements mastering. The sound processing of the Tube Vitalizer is split into two sections: On the left hand you find the controls of the Vitalizer-circuitry and the compressors. The right side features the tube section, which can be used independently of the Vitalizer-section as a high quality, low-noise tube-line preamp whenever you just want to give your programme material the warmth and smooth bottom-end of tubes.

Input & Output

  • Instrumentation amplifier, electronically balanced (differential), transformerless
  • Nominal input level: +6 dB
  • Input impedance: = 22 kOhms
  • Output impedance: < 600 Ohms
  • Max. input level: +24 dBu
  • Max. output level: +22,4 dBu
  • Minimum load ohms: 600 Ohms
  • Relay Hard Bypass


  • Frequency response (without tubes): 10 Hz - 100 kHz (100 kHz = -3 dB)
  • Frequency response (with tubes): 30 Hz - 100 kHz (30kHz=-3dB)
  • CCMR (common mode rejection):- 100 dBu at 1 kHz
  • THD & N: 0,002% at 1 kHz
  • S/N (CCIR 468-3): -83 dBu
  • S/N (A-weighted): -89 dBu

Power Supply

  • Toroidal transformer: 35 VA
  • Fuse (primary): 500 mA (230V); 1A (115V)
  • Fuse (secondary): 315 mA (230V); 630 mA (115V)
  • Ground-Lift switch
  • Voltage selector
  • Power Fail Safety

Dimensions & Weight

  • Standard EIA 19"/2U
  • 482x88x237mm (BxHxT)
  • 19"x3.46"x9,33" (WxHxD)
  • Weight: 4.9 kg; 10.8lbs

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