Watch this video to check the specifications of Yamaha RN600A and Yamaha RN800A Network Stereo Receiver for your comparison. You can see the difference between RN600A and RN800A by reading the specifications.
Yamaha RN600A specifications:
Authentic Hi-Fi quality with ToP-ART mechanical structure and pure direct mode
ESS SABRE ES9010K2M Ultra DAC for superior S/N performance
USB front-panel terminal and network capability allow high-performance DSD 11.2 MHz native playback and 384 kHz playback
Rated output power RN600A- [20 Hz-20 kHz 0.07 % THD] 80 W+80 W (8 ohms) 60 W + 60 W (4 ohms)
RN800A and RN600A supports Spotify, Deezer, Tidal, Pandora, Napster etc.
RN800A and RN600A supports file formats - MP3, WMA, MPEG-4 AAC, WAV, FLAC, AIFF, DSD
Yamaha R-N800A features:
Rated Output power RN800A- [20 Hz-20 kHz 0.07 % THD] 100 W+100 W (8 ohms) 120 W + 120 W (6 ohms)
Authentic Hi-Fi quality with ToP-ART mechanical structure and low impedance concept
ESS SABRE ES9080Q Ultra DAC for superior S/N performance
YPAO™-R.S.C. (Reflected Sound Control) and precision EQ for ideal listening environment
Custom speaker terminals cut from pure brass for highly secure connection
more details check : usa.yamaha.com