In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. Amp it up with SKB's new ingenious AUV that fits all 2-12 style mid-size combo amps. Amps are held in place on a rugged rolling velcro board with 4 patented adjustable corner cleats and a secure reverse-cinch belt. When the amp is in use, it can sit securely on top of the cover at a height that allows better sound projection.