TSE 300B amp. I built it in two chassis, separating the amp and the power supply. They are connected with a 36" cable. I may have some voltage drop over cable length. On 300B filaments I have 4.85 volts. But on the 5842's I only have 5.62 volts. The amp seems to be working, and sounding just fine. Any ill effects from low filament voltage? Thank you all.