I have three friends who are currently using Uesugi units. All of them are using a preamp with built in MM phono stage and one has his paired with EL 34 based Uesugi monoblocs. Sorry, I simply don't know any of the model #s. The fellow with the amp/preamp setup also has a Doshi amp/preamp/phono stage setup he swaps in and out. Personally, I find the two setups to be interchangeable in sound quality overall. Either is equally satisfying to me though, obviously, there are some differences in their overall presentation. BTW, he uses the Doshi phono stage exclusively as his MC cart is not copascetic with the Uesugi MM phono section.