In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. Hand-built with high grade birch plywood, the R412JX provides huge tone and proven road-worthy construction. Designed to compliment tube and solid-state heads, it offers extended low end with tight attack for a punchy defined tone. Features 4 x 12" Eminence Jaguar speakers, 300 watts of power handling, and more!