apparently the duplicator inserts the standard 2 seconds pause.
in all likelyhood, if you want more duplicates you'll have to make them on the PC.
if you do a audio-CD copy you'll have to set it to zero gap, otherwise the software will also put the default 2 seconds gap.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien