・This is the ONKYO CR-N755(S) high-resolution network CD receiver. ・It was released as the successor to the CR-D2(LTD) in the CR series. While the CR-D2 used a digital amplifier (VL Digital amplifier), this unit features an analog amplifier with a 3-stage inverted Darlington circuit. ・Before listing, the internal and external components were cleaned, and the tray belt and CD pickup were replaced with new ones. The firmware has been confirmed to be the latest version. ・I have confirmed that it can play commercially available CDs and several of my own CD-Rs without skipping. ・I have also confirmed USB playback, AM reception, FM reception, playback from each input, and Bluetooth playback from an iPad by plugging a Bluetooth USB adapter (UBT-1) into the rear USB port. I have also confirmed that I can connect to my home Wi-Fi by plugging a wireless USB network adapter (UWF-1) into the front USB port and use my smartphone as a remote control. I have also confirmed that I can connect to internet radio by operating the smartphone remote control (see image 6). ・COAXIAL output, ETHERNET connection, and recording have not been tested. ・Long-term operation has been confirmed without any problems. ・There are some scratches due to it being a used item. ・As the unit originally had many scratches, I have applied a similar paint to make them less noticeable. I have repeated water sanding several times, and I think it has improved considerably, but please refrain from purchasing if you are concerned. There are scratches on the acrylic panel of the display, the jog dial, and other parts of the front panel. Please refer to the photos of the rear. ・Accessories include the power cable and the RC-850S remote control. ・The UBT-1 and UWF-1 used for confirmation are not included. ・The remote control batteries are not included. Please prepare two AAA batteries separately. Manganese batteries, which are less prone to leakage, are recommended. ・I am also listing this on other sites, so please comment before purchasing.