The upgraded Z13000 half-bridge monoblock is the latest offering in the legendary Z Series, top-of-the-line powerhouse amplifiers. New upgrades were engineered to maximize the durability and ease of long term service of the two section PCB. Both the power supply and output sections have been made stronger, with higher current delivery. Upgraded to larger, higher current power supply Mosfets, increasing current delivery by over 30% Increased the total number of output section Mosfets from 12 to 16 PCB components upgraded from surface mount to high capacity through-hole mounted parts Heatsink length increased to meet the most demanding thermal applications Ready to connect to the DD Audio ZVL module, the Z13K delivers well above 13,000 W RMS of unbridled power with the flexibility to drive the most punishing of subwoofer stages. The Z13K's chassis features DD Audio's exclusive High Volume Air Circulation (HVAC) heat management system. The mass and intelligent fin design of the super heavy-duty extruded aluminum heatsink constantly conducts heat away from internal components. An internal brushless fan pulls in cooler air through an elevated bottom panel and end panel vents to maximize air flow. “Optimized for 16V” Specifications Frequency Response (Hz) 10 – 200 Operating Voltage 9 – 16 Test Voltage 14.4 Input Channel 1 Total Wattage 13000 Continuous Wattage @ 4Ω 4000 Continuous Wattage @ 2Ω 7500 Continuous Wattage @ 1Ω 13000 Dynamic Wattage 15000 Max Current Draw 2000 RCA Input Voltage Sensitivity 8 – 0.2 RCA Input S/N > 105dB Damping Factor > 200 THD