Check the listing for details. AudioControl LCQ-1 6 Channel Output Converter Sound Processor Equalizer. Condition: Used, Made in United States. Listed at 139.99 USD. No screws for the cover. The AudioControl LCQ-1 is a high-quality 6 channel output converter sound processor equalizer designed for car audio systems. Made in the United States, this product combines the functions of an equalizer, amplifier, and line output converter in a single unit. With its brand reputation for producing reliable audio products, the LCQ-1 is a popular choice for enhancing the sound quality in vehicles.