Can I use a preamp as a phono stage?

I have a quick question. I have a preamplifier that has a built-in phono stage and I'm waiting to receive an Audio Research line stage preamp that doesn't have a built-in phono stage. Can I use the old preamp as a phono stage and feed its TAPE output in the new line preamp's input? Theoretically, it should work. The TAPE output doesn't apply the volume control, but it produces a preamplified signal to be (theoretically) recorded onto a tape. Any ideas, folks?