Jp1208,
When you look at critical applications in laboratory, medical and industrial/commercial, there is virtually no question. They use transformers. For the latter, it is often step-down transformers that serve dual purpose and they're quite common.
Generally, I prefer core type transformers to toroidal because they are more effective filters but it's often a question of packaging. Occasionally, but not typically, they can have a mechanical hum which is one reason, along with aesthetics, they are installed remotely.
If you want regulation, look at Sola Hevi-duty, but they're not cheap.
I have a 120 lb, 5KVA, GE step-down in a closet, with a subpanel, that's fed 240V and creatively wired to supply balanced (60+/60-) AC to dual, bridged amps. It cost $100 off Ebay and $150 for shipping. A third, 1600W bass amp is direct to the wall. Also, a smaller (500VA) iso for the CDP. Dead quiet. The TVC passive line stage also provides some galvanic isolation.
When you look at critical applications in laboratory, medical and industrial/commercial, there is virtually no question. They use transformers. For the latter, it is often step-down transformers that serve dual purpose and they're quite common.
Generally, I prefer core type transformers to toroidal because they are more effective filters but it's often a question of packaging. Occasionally, but not typically, they can have a mechanical hum which is one reason, along with aesthetics, they are installed remotely.
If you want regulation, look at Sola Hevi-duty, but they're not cheap.
I have a 120 lb, 5KVA, GE step-down in a closet, with a subpanel, that's fed 240V and creatively wired to supply balanced (60+/60-) AC to dual, bridged amps. It cost $100 off Ebay and $150 for shipping. A third, 1600W bass amp is direct to the wall. Also, a smaller (500VA) iso for the CDP. Dead quiet. The TVC passive line stage also provides some galvanic isolation.