In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The 700RB-II ups the ante with 480W + 50W bi-amping, which makes it an ideal club amp for driving horn-loaded cabs. With independent control of highs and lows, it delivers extremely clean and warm sound. Sophisticated RB EQ and Voicing controls allow sound shaping to suit every music style and acoustic situation.