*If this product is out of stock at the manufacturer, it may take approximately 2 to 4 weeks for delivery. *To use this product, you will need a power supply rack such as api500-6B or 500-H. Please note that it cannot be used alone. ★SSL's traditional master stereo bus compressor The Stereo Bus Compressor was featured in the center section of the 1980s SSL SL 4000 G Series large format consoles. This unit is very simple and designed to add punch and drive to the sound of your final mix, making it sound better and more powerful, bringing uncompromising cohesion and strength to the sound you mix. This unit also has excellent acoustic characteristics and is a key element of the SSL sound that has been used by some of the world's leading audio engineers to create many hit mixes. This 500 Series rack-mount Stereo Bus Compressor will be a useful and essential sound-shaping tool for many 500 Series rack users. Key Features SSL's legendary master stereo bus compressor 6 RATIO settings (1.5:1 to 10:1) 5 release settings and Auto Release function