I am planning on building the 450V PSU.
Received the following quote from TOROIDY.
Shipping to the US is 55 EUR.
Audio grade transformers:
TS 300VA PRI: 2x 115V SEC:
> 2x 360V @350mA
> 16-0-16V @600mA
cost: 76,50 EUR/pc (0% VAT – export price)
Audio Supreme version:
TS 300VA PRI: 2x 115V SEC:
> 2x 360V @350mA
> 16-0-16V @600mA
cost: 121,60 EUR/pc (0% VAT – export price)
Is there a difference between the Audio grade and the Audio Supreme version regarding hum and interference?
The difference in price is significant and I rather purchase the cheaper version if possible.
He stated the following:
"In audio grade, noiseless transformer price You'll get transformer wound on high inductive, selected and measured core. Core and all the
windings will be impregnated. Transformer will also has electric and electromagnetic shields and epoxy filled interior.
Audio SUPREME version is fully epoxy resinged in stainless steel box"