GP40 - GoboPac 40 - 4’ W x 4’ H Portable Gobo for Large AmpsmusClearSonic GoboPac 40 Portable Gobo Amp Gobo Package with Acrylic Sound Shields and Sorber Sound Absorption Baffles Dimensions: 4 W x 4 H Part Number: GP40 GoboPac 40 Features Perfect gobo for most amp sizes including half stacks Modular and expandable if more room is ever needed Great for studio, stage, and House of Worship Cuts down on mic bleed, diffuses high frequency sound waves, and gives soundperson greater control over the mix Compact size