Sinbosen FP series switching power amplifiers, featuring 6 different models, with power output from 625 to 9000 watts per channel. Sinbosen are developing more new products, including strengthen versions and more powerful amplifier. Such as FP12000Q and FP22000Q amplifier. Sinbosen FP+ four channel amplifiers are ideally suited to the demanding requirements of modern sound reinforcement systems, with competitive price and THREE years warranty. Sinbosen (Aoyue) FP20000Q 4 channel live sound bass amplifier is the core model in the FP series , which is a perfect design for large scale events.