Check the listing for details. Stetsom IR 400.1 2 Ohm Mono Compact Digital Amplifier Full Range (Stetsom USA). Condition: New. Listed at 89.99 USD. The Iron Line Series amps feature the most compact and enhanced design in the market, while offering high fidelity sound in bass, mid and highs. Main FeaturesUsage Versatility (Subwoofers, Woofers, 6", 6x9", 2way, Drivers & Tweeters)4k Audio Quality - Ultra HDCrossovers (Low Pass & High Pass)Tough ConnectorsNew wire input with auto turnon (NO RCA NEEDED) Technical SpecsNumber of Channels: 1RMS Power at 2 Ohm 13.8V: 400W RMSRMS Power at 4 Ohm 13.8V: 160 W RMSRMS Power at 2 Ohm 14.4V: 430W RMSRMS Power at 4 Ohm 14.4V: 250 W RMSSupply Voltage: 9 ~ 15VFrequency Response: 10Hz ~ 22 KHzCrossover Low Pass: 60Hz ~ 22 KHzCrossover High Pass: 10Hz ~ 700HzSignal to Noise: > 90 dBHarmonic Distortion: > 0,01%Input Sensitivity: RCA 200 mV / Wire 1.5VInput Impedance: RCA 38K Ohms / Wire 10k OhmsImpedance Output: 2 OhmsConsumption with Musical Signal: 18A (13.8V)Consumption with Bass Signal: 36A (13.8V)Dimensions (H x W x D): 52.5 x 127,5 x 99.8Weight: 0,508 Kg