"I believe ARC put out an SP4-A that had the phono stage"
Patrickrealtor76
I'm fairly sure all SP-4 preamps came with a built in phono stage. However, not all came with a built in MC head amp.
If you use a high output cartridge(like most Grados, MMs or HOMC) there should be no problem. If you want to at some stage move to a low output MC then a good step-up transformer would probably better than the head amp that came with the SP4 anyway.
Patrickrealtor76
I'm fairly sure all SP-4 preamps came with a built in phono stage. However, not all came with a built in MC head amp.
If you use a high output cartridge(like most Grados, MMs or HOMC) there should be no problem. If you want to at some stage move to a low output MC then a good step-up transformer would probably better than the head amp that came with the SP4 anyway.