Greetings Head-Fi folks,
I bought a Rockhopper build M³ from a member here years ago. Recently I have been switching up my equipment and have run into some noise issue with the amp.
Details on the amp here:
Old DAC was a MisterX built Gamma2.
Using a Massdrop ODAC:
Also using a Schiit Modi 2 Uber:
Also have a Schiit Magni 2 Uber:
When using the Schiit DAC and amp I can turn the volume all the way up on the amp and not hear any background noise. When using my M³ I can hear hissing or background noise when I turn the volume up past about 1/4. I never noticed this with the old Gamma2 DAC because I did not need to turn the volume on the amp up much. With both the ODAC and Modi I get background noise when i turn the amp up to listening levels.
I am not an electrical engineer. I can not solder worth a damn. I have and can use a volt meter and swap equipment around. I can swap surface components like socketed OPAMPS. I assemble computers so stuff that just assembles I am good with.
What troubleshooting steps can I take to try and diagnose the issue?