Your head unit doesn't have a direct rca line in. Don't even think of connecting the empeg to any of those rca outs. =)
You need to use the CD-RB20 adaptor to patch the audio in via the IP-Bus.

Jazz
(List 112, S/N 00030, 4 gig blue)
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Jazz (List 112, Mk2 42 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)