It seems that the Marantz was playing louder than the Technics. Both machines should be matched for loudness for better judgement. Overall, the Technics sounded more refined, the Marantz sounded more rounded but there was slight distortion on the crescendos (maybe due to louder playing). For long-term listening I would prefer the Technics.
Thank you for your helpful comments. When recording with a microphone, I adjust the volume during editing, but sometimes it may not be done perfectly. I will continue to be careful.