Vm100 / 200w power amplifier module

I have purchased 2 of these modules for a stereo setup. I noticed that it says “Never attempt to run two amplifiers from a single transformer”.
I was hoping to use a single 27-0-27 240VA transformer.
Please can you explain why I can not do this.
Thanks in anticipation.

Because it is a guarantee for hum troubles due to the wiring layout.
Unless you are very experienced and capable of solving these problems, we suggest that you go for the 2 transformer option.
Please understand that hum problems are not easy to solve and we cannot solve them by mail.

Thank you for your reply. I would never have thought of that.