muddy new build

[MWJB]

Why would you need a dc heater supply? Be careful that you're not just making a rod for your own back.

[afm_380]

Thank You for the 'Reality Check'

A dc heater supply was on my 'Want List' for this build as my first build (which was a more conventional 5e3 build) has quite a bit of background hum in it (I play guitars equipped with Dynasonic pickups which pickup electrical noise too easily). This new build is quite a bit quieter ... I may not 'Need', but then again I won't know til I try it ... right?

[pdf64]

DC heaters would give zero benefit and decrease reliability (due to additional stressed PSU parts, additional transformer winding current).
1NXXX diodes are only 1amp, you'd need something beefier, best to heatsink also.
To find out whether DC heaters would help, there's a method described on Geofex of temporarily rigging up a 6V battery to power heaters. I'd try that first.