Amplifier Weight

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santoshlv426

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Can anyone explain why some integrated amps of late (Krell, Yamaha and Roksan) weigh as much as 22-23kg due to their hugh transformers (power supplies).

Is it fair to say that these have more power in reserve that an equivalent power (Watts) amp that weighs say 9-12kg (more common).

How does one calculate the current output from an integrated amp. Do I use P=(I^2) x R.
 
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