Cheap Wosong WA-205 Amplifier (Tripath TK2050, Class T)

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The first thing I nociced is that the amplifier is dead silent (powered by a cheap SNMP brick). Though, when powered by a toroidal with 80KuF Nichicon caps a lot of hum appeared. After changing the transformer with a regular E+I one, the hum was gone.
It sounds good. Anyone else?
 
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