• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

LM317 current regulator

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
diyAudio Senior Member
Joined 2002
FACTS ARE FACTS.

Hi,

This is merely fashionable at the moment.

Is AC heating fashionable?

If you don't have any hum while using AC then why not?

On DHT triodes using DC will definetely change the sound,I mentioned this before it also changes the plotted curves.

IMO,the main advantage of using AC is the preservation of the heater to cathode relationship.

Adding sand devices in the heater circuit will often have a sonic impact,improving on S/N and bass performance,hence to many ears make them sound more sandlike.

Take your pick,;)
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.