In the past, the hierarchy of importance in the vinyl chain was. table 1st, arm 2nd & cartridge 3rd. Atma-Sphere has stated that with his Triplanar could make a much less expensive cartridge sound better than an expensive cart on a lesser arm.
As far as the hierarchy goes, I think the phono preamp is as important as the Tonearm. IMO, I’d rather have a lesser cartridge on a great phono pre than a great cartridge on a lesser phono pre.
I don’t know about the 103 except it gets good reviews for being a budget cartridge. But it is no Lyra Skala. Nor is the MMT tonearm a Triplanar. I’d start with the arm and review the phono pre again to see if its up to the task. It may be good but I don’t know. Whatever the case, enjoy the journey
As far as the hierarchy goes, I think the phono preamp is as important as the Tonearm. IMO, I’d rather have a lesser cartridge on a great phono pre than a great cartridge on a lesser phono pre.
I don’t know about the 103 except it gets good reviews for being a budget cartridge. But it is no Lyra Skala. Nor is the MMT tonearm a Triplanar. I’d start with the arm and review the phono pre again to see if its up to the task. It may be good but I don’t know. Whatever the case, enjoy the journey