Reference-Class 4-Channel Expander/Gate/Compressor/Peak Limiter with Dynamic Enhancer and Low Contour Filter Ideal for compressing mono/stereo signals and providing virtually inaudible noise suppression, without loss of high frequencies; increasing vocal presence and energy; and limiting, or smoothing out extremely-high signal peaks. The MDX4600 features amazingly-accurate, 8-segment LED meters for In/Out Level and Gain Reduction, switchable +4 dBu or -10 dBV operating level, Side Chain I/O, and servo-balanced XLR and 1/4" Inputs and Outputs

Behringer SX3040 V2 2-channel Sound Enhancement Processor 2-channel Sound Enhancement Processor with Sonic Exciter and Bass Processor. Equipped with a special phase-compensating Bass Processor and Sonic Exciter, the SX3040 adds amazing depth, punch and sparkling clarity – to dramatically enhance sound quality. And thanks to SX3040’s twin channels, you process a stereo signal, or a bass in one channel – and a keyboard, vocal or guitar in the other.

Behringer Sonic Exciter SX3040- Ultimate Stereo Sound Enhancement Processor. The incredible SONIC EXCITER SX3040 will make your live performances and recordings more powerful, dynamic and superbly articulate. Equipped with a special phase-compensating Bass Processor and Sonic Exciter, the SX3040 adds amazing depth, punch and sparkling clarity – to dramatically enhance sound quality. And thanks to SX3040’s twin channels, you process a stereo signal, or a bass in one channel – and a keyboard, vocal or guitar in the other.

Behringer FBQ1502HD Ultragraph Pro- Graphic Equalizer Product Specifications: With FBQ Feedback Detection System audio anayser Servo-balanced inputs and outputs with jack and XLR Additional Sub-Out (XLR) with adjustable low-pass 30-200 Hz Switchable Low-Cut 4-Digit LED display and input level control Illuminated faders Design: 19" / 1U

Behringer FBQ1000 Feedback Destroyer Behringer FEEDBACK DESTROYER FBQ1000 Automatic and Ultra-Fast Feedback Destroyer/Parametric EQ with 24 FBQ Filters.