Kato N 176-6108-S Amtrak Phase III EMD F40PH Diesel Locomotive ESU LokSound DCC August 16, 2026 By 0 ESU LokSound v5 Micro sound decoder58941. To support passenger service, the F40PH is equipped with a secondary electrical generator referred to as the head end generator, or HEP, for Head End Power. Model: EMD F40PH Diesel Locomotive.