Find many great new & used options and get the best deals for Yamaha EQ-630 Natural Sound Graphic Equalizer at the best online prices at eBay! Free shipping for many products!. The Yamaha EQ-630 is a sophisticated graphic equalizer designed to enhance audio performance for both professional and home audio systems. This unit features a dual-channel configuration, each equipped with 10 frequency bands ranging from 32 Hz to 16 kHz, allowing precise adjustment of the audio spectrum.
Manual Library / Yamaha Yamaha EQ-630 Stereo Graphic Equalizer (1990) add a review. This unit is in beautiful shape and comes with original accessories. This is a rare find that will make any collector very happy.The LCD display is bright and vibrant, all the lights work great. The response time for the EQ lights is fluid to a degree I've never seen in another model, it's q.