YAMAHA ACTIVE SPEAKERS: The DBR's lightweight, high performance Class-D amplifier is capable of producing up to 1000W* of power, achieving an SPL of 132dB, delivered with remarkable clarity and dynamic characteristics. DBR10 has an output level of 700W. Custom Designed Transducer. The high power output woofers deliver well-defined, powerful bass with minimal distortion, while the 1.4" precision compression driver* produces accurate mid-range and high frequencies.*DBR10 features a 1" compression driver. A Rugged, Highly Portable Cabinet. DBR Series speakers feature a compact, lightweight, and durable plastic cabinet which offers the highest level of portability of all Yamaha powered speakers. The sleek steel grille bolsters cabinet durability and protects the internal components while a newly designed ergonomic handles provide effortless transportation and system setup Easy-to-use Onboard 2-Channel Mixer. DBR Series speakers have two input channels. CH1 has a combo jack which accepts both XLR and TRS Phone allowing for either Mic or Line level input signals. CH2 offers two input options; a combo jack that accepts XLR or TRS Phone, and an RCA pin jack for input from CD players or other stereo line-level sources. The onboard mixer allows you to select either CH1+2 MIX to mix the signal of CH1 and CH2, or CH1 THRU to pass the signal from CH1 only.