VM Audio ECD2500.1 Encore 2500W 1 Ohm Class D Amp Digital Mono Power Amplifier VM Audio ECD2500.1 DIGITAL MONOBLOCK AMPLIFIER FEATURES Mono Power Subwoofer Car Amplifier Hyper-Digital Class D Exclusive Robust High-Cycle DC-to-DC PWM Power Conversion Four-Stage Regulated Synergistic High Voltage Rail Performance