Check the listing for details. Pyramid 903G Equalizer. Condition: Used, Made in Taiwan. Listed at 203.78 USD. The Pyramid 903G Equalizer is a high-quality signal processor designed for car audio systems. Made by the reputable brand Pyramid in Taiwan, this equalizer is known for its ability to adjust and refine audio signals to provide a more balanced and customized listening experience. Ideal for enhancing the sound quality in vehicles, the Pyramid 903G Equalizer is a reliable and effective tool for audiophiles looking to improve their car audio setup.