Yamaha's audio engineers have specifically designed the new P-Series power amplifiers to be perfect companions to the popular Club Series loudspeakers. To achieve this, they made sure that the amplifiers are capable of delivering power that matches the power handling capabilities of the Club Series Speakers, & equipped them with YS Processing (Yamaha Speaker Processing) to deliver a signal that will result in optimum system performance. Power is plentiful, ranging from 3200 watts from the P7000S to 1300 watts from the P2500S in 4 ohms bridged mode. If you want the perfect power amplifier for pair of Club S115s with a 500-watt program rating, for example, the P5000S with 500-watts per channel into 8 ohms is the obvious choice. Further matching precision is afforded by Yamaha's proprietary YS Processing circuit. Each P-series amplifier is equipped with this specially designed circuit so that it delivers output tailored to the specific response of the Club Series speakers. All models feature both XLR & 1/4-inch TRS inputs, & Neutrik Speakon, phone plug, & 5-way binding post outputs. Other features include Yamaha's exclusive EEEngine technology for high performance with exceptional efficiency, sweepable high & low pass filters for matching output to any loudspeakers, a compact & durable 2U chassis, & variable speed cooling fans. Features Big Power with Outstanding Efficiency The new P-Series Power Amplifiers deliver solid, professional-quality power in a wide range of configurations designed to suit a variety of applications. In 4 ohmas bridged mode the P7000S delivers 3200 watts, the P5000S 2600 watts, the P3500S 2000 watts, & the P2500S 1300 watts. Those on a budget will find the lineup's high power output & affordable prices offer superior quality without putting a strain on allotted funds. Further savings are realized with extremely efficient operation utilizing Yamaha's exclusive EEEngine technology, which keeps operational costs down by significantly reducing AC power consumption & heat generation. The Perfect Match for Your Club Speakers The new P-Series Power Amplifiers can be used with any loudspeaker system, but if you're using our Club Series speakers they will provide optimum power & performance. In an 8& Omega; stereo application, power output per P7000S channel is 700 watts (650 watts on the 230V model), the P5000S puts out 500 watts per channel, the P3500S delivers 350 watts per channel, & the P2500S outputs 250 watts per channel. This wide selection lets you choose the amplifier that best matches the power handling capabilities of your speaker system. All four models are equipped with independent sweepable high-pass & low-pass filters on each channel so you can optimize output for subwoofer or full range systems. Light Weight for Easy Transport & Setup Look at the specifications & you'll notice that the P2500S & P3500S are surprisingly light in weight, making transport & setup less of a chore. What is really impressive, however, is the difference in weight per watt when you look at the P5000S & P7000S. The use of an advanced switching power supply makes these two models very lightweight while maintaining superior audio quality. Versatile Connectivity To provide the most versatile connectivity possible, all four models are equipped with Neutrik Speakon* output jacks & 1/4-inch output jacks for each channel, in addition to 5-way binding post. Balanced XLR & 1/4-inch TRS jacks are provided for channel input. * Speakon is a registered trademark of Neutrik AG. EEEngine EEEngine (Energy Efficient Engine) Technology makes more efficient use of AC power by reducing power consumption & heat generation without sacrificing output power or sound quality. When power requirements are low, the system uses a highly efficient current buffer to transparently switch input power on & off as needed. As power requirements increase, an independently responding auxiliary power line supplies additional power as required. Output isn't compromised because the auxiliary power line is driven by the power supply voltage which maintains maximum output to the speaker load. YS Processing YS Processing (Yamaha Speaker Processing) achieves optimum matching with our popular Club Series loudspeaker systems. This special circuit optimizes output from the power amplifier to match the characteristics of Club Series speaker systems, resulting in extra-smooth highs & enhanced lows.