DHTs are used at 5 to 10% of rated capacity, so not an issue. Bigger issue is the rectifier burning at full power output. This is easily over come with buying a cheap $15 solid state recti or the great Shuguang 274b recti for $20.I am seriously considering the purchase of a Pacific DAC. The only thing holding me back is my understanding that the DHT tube filaments are constantly energized, even when the DAC is in standby. I’m not a tube expert, but I believe this does reduce the life of the tubes. I’ve also read the DAC does not have an ON/OFF switch so the only way to defeat this feature is to unplug the DAC or remove tubes when the unit is not in use. For any who have used the Pacific can you confirm whether this is true or not?
If it is true how are you dealing with it? Are you keeping your expensive DHT tubes energized all the time, unplugging the DAC when not in use, removing the tubes when not in use, replacing your expensive DHTs with Inexpensive DHTs when not in use or something else?
Yes, you can shut down the dac with switch at the back. Pretty sure I posted pictres of the power switch months ago. The Pac is much better than the already great GG. GG2 is better than GG as well.