Ultragraph Pro EQ

     ...the forward-looking, patent-pending FBQ Feedback Detection System that instantly reveals feedback frequencies and also can be used as an audio analyzer. A whole battery of superb features makes the FBQ6200 score high on the ease-of-use scale: dedicated limiters with gain reduction meters for each channel protect your sound system from overload and distortion, and a pink noise generator provides test signals for equalizing your sound system to any room acoustics. A mono subwoofer output with dedicated level control and adjustable crossover frequency gives your music some extra verve. Additional sweepable high- and low-cut filters for each channel remove unwanted frequencies such as floor rumble and tape hiss. Level setting is no sweat thanks to the highly accurate 8-digit LED input/output metering and input gain control. Top-drawer components such as the ultralow-noise audio operational amplifiers, servo balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors and the relay-controlled