Most amps that have half power switches deactivates tubes in order to compensate for the power shift.
That means shift and change in tone. Getting an attenuator is a much more effective way to preserve your tone and still push the tubes.
Not familiar with the Switchblade, but most everyone here has already covered most of the bases. Just simple things too. Make sure Power first, then Stdby when turning on, then the reveres when turning off. Don't unplug your instrument while its connected with the STdby on, etc etc.
Just remember, saturating and pushing the tubes is a very big part of some people's sound. It's very important.
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