Photos of the physical board (Rev. 1) show the amplification is a stock Pyramid PB-150P Pro Plus 4-channel car amp mounted as a module; the VWE board is passive: 12V/remote power distribution, per-corner 3-way crossovers (Dale IHB-3 820uH/180uH, MMP film caps, CP-5 2R pads), 6-pin woofer/mid/tweeter corner connectors, and the LED output-check circuit. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>