The DS-500 is a single channel, non-tube version of the De-esser in the Pendulum Quartet Tube Recording Channel.
Pendulum Debuts DS-500 De-esser
It uses the same highly selective inductive detector and opto-inductive notch filter as the the de-esser in the Quartet, so it has the same charcteristics, and very fast response. By pairing it with a unity gain class A solid-state line stage, the DS-500 retains the transparent character of the de-esser action, while keeping the signal path clean and uncolored. The DS-500 is fully compatible with any rack that adheres to the API spec.
Owners of the Quartet have found the de-esser to be effective in many other applications, which include removing finger squeaks in acoustic guitar tracks, and "wisp" sounds on electic bass.
Format: API 500 series standard, fully compatible Input Impedance: 20K, balancedOutput Impedance: less than 50Gain: unity (0 dB)Max. Output Level: +27dBu, balancedThreshold: off to +30dB of detector gainDetector: 11 center frequencies at 3.4, 4.5, 5.7, 6.6, 7.5, 8.0, 8.8, 9.4, 10.0, 10.5, and 11.5 kHzDepth: continuously variable from -2 to -10 dBFrequency Response: +/- 1 dB from 10Hz to 20kHzNoise Level: better than 90 dB below +4dBu, 0-80kHz Total Harmonic Distortion: less than 0.01%, 20-20kHz