Mordante: The answer is no. You can run balanced from turntable to phono pre and single ended out of the phono preamp. You'll probably realize about 75-80% of the benefits of balanced operation this way-it offers much more performance, for example than running single ended from the table and balanced from the phono stage.
FWIW the Aqvox can be operated with balanced inputs and single ended outputs.
FWIW the Aqvox can be operated with balanced inputs and single ended outputs.