plating Wakeari Sound .. check OK There is sound, but the volume gets louder or quieter and the operation is unstable. There are scratches, corrosion, and water stains on other surfaces. Main unit only/no accessories Two back channel covers are missing. The printing on the back is starting to fade SOUND It looks like STREAM's 10th anniversary model. Product number: RI02970 *This is a problem because the volume adjustment is not stable and the sound suddenly gets louder or quieter.