・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 also been updated to the latest version. ・I have confirmed that it can play commercially available CDs and several CD-Rs without skipping. ・I have also confirmed USB playback, AM reception, FM reception, playback from each input, 　Bluetooth audio playback from an iPad by connecting a Bluetooth USB adapter (UBT-1) to the rear USB port, 　and the ability to connect to home Wi-Fi and control the unit with a smartphone as a remote control by plugging a wireless USB network adapter (UWF-1) into the front USB port. 　I have also confirmed that internet radio can be accessed by operating the smartphone remote control (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 the item being used. Please refer to the photos at the back. ・It has been maintained and there are no functional issues at present, but the display brightness may have slightly decreased. 　However, it is still at a practical level, and the price has been reduced accordingly. ・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.