WFO 8.1D Specs: 

• Power @ 1 Ohm: 8000w @ 12.6v
• Power @ 2 Ohm: 4875w @ 12.6v
• Power @ 4 Ohm: 2800w @ 12.6v
• Power @ 1 Ohm: 9500 @ 16v
• Frequency Response: 12hz – 250hz
• Signal to Noise Ratio: >100db
• Damping Factor: >200
• Subsonic Filter: 10hz – 50hz
• Low Pass Filter: 35hz – 250hz
• (3) 0 GA Power & Ground Terminals
• 16v Working Voltage
• 4 Power Transformers
• Heavy Duty 2oz printed circut board
• Size: 620mm W x 210mm W x 62mm H 

All WFO series amplifier feature: 

• Custom high mass, thermally optimized aluminum heat sink casing
• Overbuilt power supplies and output sections utilizing high grade components
• Heavy duty double sided through hole PCB’s with thick solid copper heavy duty traces
• Hand soldered nickel plated Tiffany RCA inputs/outputs
• Single 1/0 and 4 gauge nickel plated power and ground inputs
• Nickel plated 8 gauge speaker outputs
• Fully linkable/strappable (Mono-block)
• Input sensitivity 8V – 200mV
• Variable Phase Shift 0°- 180°
• +18db Remote Gain control
• Multi-way fully intelligent circuitry for maximum protection