For securing the power transformer, a transformer base that floats with resin in a cast trunk case common to the higher-end model DCD-S10IIIL is used to cut low-frequency noise (Image 14). Equipped with AL24 Processing technology, it is a popular model with a reputation for sound quality, combined with a Burr-Brown 24-bit DAC (PCM1704). As it is the latest type of DCD-1650SR, the condition is also good. Upon listing, the pickup lens was replaced, and silicone grease was applied to the sliding parts. The tray opening/closing rubber belt was also replaced. As there are cases where the L-channel DAC, which is common in the DCD-1650SR, breaks down due to its own heat generation, heat sinks have been attached to both channel DACs. (Image 15 ⇒ 16) I confirmed that there are no problems with the output of both channels for reading and playback, analog via RCA and digital via OPTICAL. There is no scratchiness in the PHONES output. Please refer to the following for a product overview. https://audio-heritage.jp/DENON/player/dcd-1650sr.html Accessories: * Generic power cord * Replacement remote control RC-253 (batteries not included) The volume button, which is not included on the original RC-281, cannot be used. * Instruction manual (copy) This is a used item of age, so it is not new. Please refrain from considering this item if you are concerned about minor details.