The ELDs Derresser API 500 module is a multi function dynamic filtering device, in an API 500 series module format. In its basic DS mode, the DerrEsser is an effective, level insensitive de-esser, which is a device that will adjust the high frequency gain on overly trebly or spiky vocal, or other source. By using a crossover technique, and dividing the audio up into a high frequency range and a low frequency range, the DerrEsser can use its Voltage Controlled Amp to turn down comparatively high or harsh high frequencies in an extremely musical manner. However, unlike other de-essers, the device is not limited to just de-essing, and allows for multi use of its circuitry.

The main features of the ELDs Derresser API 500 module include:

• Freq. Response is 3 Hz to 120 kHz (-3dB points)
• Dynamic Range - 115 dB from maximum output (.5%THD soft clipping) to minimum output
• Transformerless noise floor typically Í 93dBu.
• Distortion Ranges between .0035% and .01% depending on mode and settings.
• DC coupled Input and Outputs
• High quality audio caps used internally
• Input Balanced, Output single ended but with balanced impedance
• Pin 2 hot
• Input Impedance is 20k Ohm. Output impedance is less than 51 ohms
• D-S Dynamics Time Constants - Attack time is less than 1mS. Release .04 sec, fixed internally
• Power Consumption Í 8 Watts max. 4 Watts Typical