Integrated tube amp as amp only

Yes it is safe and it should work just fine.

Nice 👍. Thank you sir. 

Sounds like a good experiment.  Have fun,  this is what it's all about.

Didn’t work. Didn’t blow up either so that’s good. Must need the preamp tubes installed either way for sound to come out. Anyway now got the tube preamp hooked up to a benchmark AHB2. Sounds really damn good so far. 

Only the 12AX7 are preamp tube, the 12AT7 are driver tube.

If driver tube are not installed, the power amp will not work.

I would not leave socket's empty, even if used as Amp, keep tubes/pins in the sockets.

Just gonna order another 2 sets to get the Jolida operational and move it down the road.