Can't say anything about the MBL 6010, but I just auditioned the MBL 5011, and compared it to the Nagra PLL. I bought the Nagra!! IMHO the Nagra was soooo much better. Much more information (detail) sound stage was bigger, imaging, and mid range was in a different league I thought. If fact after auditioning I was in the show room and could hear some of the music I was auditioning, still playing with the Nagra as the pre, and the detail was obvious from the show room, outside the listening room.