At least one thing is certain, R transformer is not easy to do. It is possible to use it as the power supply of low-current front-stage power amplifier and CD player, but it has serious defects as the power supply of rear-stage power amplifier. Because the structural form of R-type transformer itself is not easy to change, it is easier for ring type and EI type to achieve the purpose of beautiful sound by changing the structure. The power amplifier power supply made of R-type transformer usually has a hard sound, lacks aura, and often does not bounce at low frequencies, which makes it look hard.

3. Is the silicon content in the silicon steel sheet of transformer core as large as possible?

It can't be seen that the silicon content of silicon steel sheet has little influence on the quality of transformer, but the orientation and non-orientation are related to the type of iron core. Secondly, even the same type of iron core, if not handled well, the quality will be very different.