Cerwin-Vega B51 – Stealth Bomber Series 1-Channel Class D Monoblock Amplifier | 500W RMS, Ultra-Compact & High-Efficiency

Website ia wrong. It is only 300x1 rms at 2 ohms per the box and it does not come close to that even at 14.2 volts. The B51 is 1 ohm stable and is rated at 500x1 at 1 ohm. The B1 was rated at 500x1 at 2 ohms. I guess for the price and the name I expected more. I have had many amps both cheap and top of the line and this one I do not recommend.

I agree with what Dan wrote! The B51 is rated at 300w RMS @ 2ohm and 175w @ 4ohm but you can get 500w @ mono 1ohm bridged. The description in this item reflects the B1 model, not the B51.