BHK Preamp


#1

Hey there. I’m trying some Tungsram 6922 tubes. I changed the jumper from 12 to 6. Do I need to do anything else?


#2

There’s a second jumper for current as per BHK Pre manual page 10 set to 5 mv bias as per Discussions here for 6/7 volt tubes


#3

Is this required or just suggested? I can’t tell from the manual.


#4

“You can also change the bias current running through the tube if you wish.” So is this mandatory or required?


#5

The setting to 5 gives a better sound with 6/7 volt tubes but you can move between the two to find the right setting for your ears this won’t hurt the tube


#6

BHK preamp arrived Saturday and I want to change cables. My question is can I change cables in standby mode or should I power off, and also turn off master power switch, before changing any interconnects or speaker cables?


#7

I always turn off the main power on any piece of gear when changing cables, but with the BHK gear standby just turns off the tube section.


#8

Thanks for your quick response. I will turn off standby, followed by the master switch before changing any cables.


#9

No problem doing this in standby mode.