Audiophilepure

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“Finally, regarding the power supply, the smaller amps have one third more storage capacitance. All .8 models still use very large Plitron toroidal transformers, and have new On/Off switching and high current delay, allowing conformance with the stand-by draw of 1 Watt. The front-end circuits have larger power supply decoupling, “This coupled with interleaved layout techniques has reduced the output noise of the amplifiers by another 10 dB. The range between peak output and average noise floor is greater than 130 dB.”

Even in the vault-like room, the noise level of the XA200.8 through even higher efficiency speakers is to my ear nonexistent. Note that 130dB is in the range of Class D amps! The only time I heard a peep from these monoblock amps was sometimes, when warming up or cooling, a tine of the heatsink fins might ping once or twice, but not continuously. The quietness set the stage for music played at a moderately high listening level to explode from the coveted “black background”— an exciting experience!”

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