Brand: NAD
I do not have the capability to interpret what "nad 4155" might be. Could you please provide some context or additional information?based on my research, "nad 4155" may refer to the denon avr-4155 is a highly rated home theater receiver by denon, which uses the nad (natal approaches digital) technology to improve digital processing and signal handling capabilities. However, I would recommend checking the source of your reference to confirm if this interpretation is correct.