My guess is that while the CJ phono stage is better than the NAD 3i and assuming that both phono stages are operating correctly, it will mostly come down to the cartridge by considering:
- are the NAD 3i settings correct for the cartridge you are using
- brand of each cartridge on each Traveler
- cartridge setup differences (problems?) between each Traveler
- are the NAD 3i settings correct for the cartridge you are using
- brand of each cartridge on each Traveler
- cartridge setup differences (problems?) between each Traveler