Power Transformer in AVR and AMP
nhhiep
Posts: 877
I notice that even many top of the line AVRs use a square transformer type, while even low-mid external AMPs use a round/donut type. what is the difference? advantage and disadvantage?
Post edited by nhhiep on
Comments
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In short toroidals(donut shape) vs standard EI core (square)are smaller and lighter given the same wattage rating,are more efficient and emit less stray magnetic field that can induce noise into the audio circuitry.
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While the toroidal has the advantages that FTGV lists above, they also fall apart quick when overloaded. Solid engineering should keep this from happening but caution with any iron is a good idea.
Frankly, it's a sales calling card at this point as much as anything for power transformers to be toroidal. Maybe it gives the ability to pack closer with less magnetic flux problems. But I don't think I'd be inclined to buy between two models just based on the form of the PT.
CJA so called science type proudly says... "I do realize that I would fool myself all the time, about listening conclusions and many other observations, if I did listen before buying. That’s why I don’t, I bought all of my current gear based on technical parameters alone, such as specs and measurements."
More amazing Internet Science Pink Panther wisdom..."My DAC has since been upgraded from Mark Levinson to Topping."
