First thing you have to do with the M1 is replace the switching power supply with the new linear one. The upgrade was transformative. Any hint of glare that it had before was completely removed.
I subsequently replaced the fuses with Hi-Fi Supreme. This made a noticeable improvement as well. When I was done with the upgrades I actually changed my preferred filter settings from MP2 to MP0.
I subsequently replaced the fuses with Hi-Fi Supreme. This made a noticeable improvement as well. When I was done with the upgrades I actually changed my preferred filter settings from MP2 to MP0.