What soix said. Try a different source other than phono and see if a problem there too. If there is then it’s amp or speakers. If not that would point to phono rig or phono section of amp.
Troubleshooting expensive component systems is not easy but trick is to swap things in and out as regression tests to isolate the problem. Otherwise it is hard to be sure.
Troubleshooting expensive component systems is not easy but trick is to swap things in and out as regression tests to isolate the problem. Otherwise it is hard to be sure.