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              Based on the famous Spectra Sonics 1969 610 Complimiter circuit design, the Spectra 1964 STX 600 offers improved headroom, low distortion, and seamless transition between limiting and compression. The unique two-knob design allows for quick and easy setup. Despite the smaller form factor, the STX 600 offers comparable performance to the Spectra 1964 C610 and V610 at a more affordable price.



  • Input Impedance: 1200 Ohms
  • Output Loading: 600 Ohms to infinity
  • Maximum Gain: 62dB
  • Input Level: Typically -50d