Matchless DC30 half power switch question

I usually run my DC30 at the half power switch setting.
This supposedly disengages two of the power tubes(?).

Is it possible to determine which ones,middle two or the ones on both sides or some other combination,and more importantly is it then possible not to have any tubes at all at the unused positions without any adverse effects to the amp or sound?

Thanks,

Ted

 

Thanks!

I was thinking that if I use the amp in half power(2 tubes on) , when I do decide to use it at full power the rest of the tubes might not be matched anymore since they remain unused.

So,I figured it would be best to keep a set of two for dedicated half power use and a set of four for full power.

I believe some people use to "share" tube duties,swapping the two used with the two unused pairs everytime they play, but I figured two different sets would be more practical.

I also wanted to make sure no extra strain is placed on the components...

Ted

 

Thanks guys!

It also occured to me that since I use only two I could then also use some Brimars that I had found...
Trouble is,I've only found two matched duets that can't be used together...so that's the rest of the story!

Ted