Check the listing for details. Bose 402-E Active Equalizer with 19” Rack Mount Faceplate Made in USA. Color: Black & Silver, Condition: Used. Listed at 225.00 USD. Made in the USA, this Bose 402-E Active Equalizer is designed to enhance the performance of the Bose Panaray 402 speaker system. It comes with a 19-inch rack mount faceplate and works perfectly. It’s in excellent condition. * Functionality: This active equalizer is tailored to optimize the sound quality of the Panaray 402 speakers, ensuring a smooth and accurate spectral response. It adjusts the frequency response to match the specific characteristics of the speakers. * Frequency Response: It supports a frequency range from 90 Hz to 16 kHz, which helps in delivering clear and balanced audio. * Design and Build: The equalizer comes with a 19” rack mount faceplate, making it easy to integrate into professional audio setups. Get the best performance out of your Bose Panaray 402 speaker system with this EQ, whether in a studio or live sound environment.