The old repair shop technicians know well the problem of tube preamps momentarily passing DC upon power up into SS amps. It's put a lot of bread on their tables.
Even though it has a cap at the output of a tube amp, right at that moment of coming up, a small amount of DC is present...very briefly...for just that moment. And may not really show on a VM. If you think about 250-300vdc just on the other side of that cap and realize that a single volt passing...even briefly is a big deal....then you're seeing the issue.
Pairing a tube pre with a SS amp can sonically work well, but regardless of whether the amp is DC coupled or not it's only smart to always develop the habit of turning your gear on and off in the proper procedure. Source, preamp and then power amps. At shutdown, reverse. If you hear that brief but loud thump, you are running a risk to your speakers!
DC coupled amps can do bass very well in my experience, so it's not really something to worry about, just to know of and manage appropriately.
EV3
Even though it has a cap at the output of a tube amp, right at that moment of coming up, a small amount of DC is present...very briefly...for just that moment. And may not really show on a VM. If you think about 250-300vdc just on the other side of that cap and realize that a single volt passing...even briefly is a big deal....then you're seeing the issue.
Pairing a tube pre with a SS amp can sonically work well, but regardless of whether the amp is DC coupled or not it's only smart to always develop the habit of turning your gear on and off in the proper procedure. Source, preamp and then power amps. At shutdown, reverse. If you hear that brief but loud thump, you are running a risk to your speakers!
DC coupled amps can do bass very well in my experience, so it's not really something to worry about, just to know of and manage appropriately.
EV3