wool Posted August 31 Share Posted August 31 Hello everyone, I have some CVR's Amplifier , D-654 , D-1502 and D-2002. All of those were bought by CVR Pro Audio in China. Unfortunately , Those have some odd working. /D-654 , D-1502 When the speaker is not connected, periodic noise can be heard from the main unit when the power is turned on. Tch-tch-tch. When a speaker is connected, it can be heard from the speaker. This is a phenomenon originating from the amplifier. /D-2002 The same periodic noise is also present. This causes the LED lamps used in the building to flicker. This phenomenon also occurs with no audio signal input and no speaker connected. I can't communicate well with customer service at the head office, Are there any owners of these models who are experiencing these symptoms? Is this normal? Quote Link to comment Share on other sites More sharing options...
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