Any plan on BeePree with updated power transformer to accommodate 2A3/45?
That is tremendously unlikely, especially with the 2A3. Super quiet filament power is extremely important for a directly heated preamp to work properly, and making a regulated 2.5V/2.5A power supply would end up driving the product price up more than just using the 300B. As far as the #45 goes, its internal impedance is a little high to be used in this manner in a high end product.
I just feel a bit "strange" (just me, without technical reason) to have mighty 300B pre-amp driving tiny 45 power-amp.
There's an obvious solution to that problem
tb
I also read somewhere that current BeePree only accept 120V mains? Maybe new universal trans for the next update?
That is correct. We will be transitioning the kit shortly to the universal power transformer that's equivalent to the remaining 120V units we have now, but we haven't done that quite yet. I should bug Doc B. about doing the next manual...