Those specs remind me of the specs of the announced (but not yet produced) Neo 5100 unit. It also has a cd and a removable HD, is not removable itself and has a tuner and integrated amp.
Only thing from which it would differ from the specs you mention is that the Empeg's VFD would probably be of better quality.

There's a pic of it here (third pic). There were more pics than only this one online, but I can't seem to find them. Note that the site still claims it was going to be released april 2001, but so far it hasn't shown up yet.

Riocar 58gig (48gig + 10gig IBM travelstar) S/N : 10101747 red
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Riocar 80gig S/N : 010101580 red
Riocar 80gig (010102106) - backup