Infection, whilst the quality of the trasformer is key, I believe the type tends to be somewhat imaterial.
The proliferation of toroids in today’s components probably has more to do with slim case designs, but also their lower audible hum levels makes them more desirable to component designers.
I have two source components, one with EI and one with toroid and believe there is little difference in their perfomance that can be attributed to the transformer type.
The component with the EI transformer is very quiet, i.e. no hum, an indication of good EI transformer design/build practices.
In the past, I have replaced the wal-wart AC "power supply" with an EI transformer and later with a toroid. What I discvered is, there was no audible difference in the performance of the component , except for the slightly louder hum when using the EI transformer.
I believe the key really is the quality of the transformer design and build, which is difficult to discern from a simple visual inspection of a component.
Having said all of that, the artile indicates EI to be superior, however, I would not allow that to guide any decision I might make about a component based on the transformer type alone.
I let my ears do the listening 😊
Hope that helps
The proliferation of toroids in today’s components probably has more to do with slim case designs, but also their lower audible hum levels makes them more desirable to component designers.
I have two source components, one with EI and one with toroid and believe there is little difference in their perfomance that can be attributed to the transformer type.
The component with the EI transformer is very quiet, i.e. no hum, an indication of good EI transformer design/build practices.
In the past, I have replaced the wal-wart AC "power supply" with an EI transformer and later with a toroid. What I discvered is, there was no audible difference in the performance of the component , except for the slightly louder hum when using the EI transformer.
I believe the key really is the quality of the transformer design and build, which is difficult to discern from a simple visual inspection of a component.
Having said all of that, the artile indicates EI to be superior, however, I would not allow that to guide any decision I might make about a component based on the transformer type alone.
I let my ears do the listening 😊
Hope that helps