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The 503

The Model 503, like its counterpart found on the 583e, offers up very low distortion signature and minimal phase deviation; it is an extremely clear and transparent EQ design. Additionally, we’ve added some capabilities to the 503 not found on the 583e, specifically:

      • Cut/Boost range increased to +/- 12dB
      • Low pass filter at 5k & 10k
      • High pass filter at 50hz & 150hz
      • +/- 6dB overall trim gain stage

503 Specs